Long-term weather trends in Tarakan: 30-day, 3-month and 12-month forecasts
Weather trend
Based on 18 years of archives
Calculated on 6 September 2026
Find long-term weather in Tarakan, Indonesian Borneo (Kalimantan), with a 30-day trend, for the next 3 months and month-by-month over 12 months, calculated from 18 years of weather archives.
30-day weather forecast in Tarakan, Indonesian Borneo (Kalimantan)
This summary helps quickly identify the major weather trends for the coming month in Tarakan, Indonesian Borneo (Kalimantan), before checking the day-by-day calendar below.
Average temperature
28.5°C
Likely rainy days / week
5.7 days
Dominant weather type
rainy
47%
To remember
The expected temperature remains close to the normals, around 28.5°C on average. The rain looks close to usual levels, with about 5.7 rainy days per week. The dominant scenario remains rainy, with about 47% recurrence and a average confidence.
These long-term predictions are calculated from 18 years of observed weather in Tarakan. They allow identification of probable trends derived from historical data, and are not short-term weather forecasts.
30-day weather calendar in Tarakan, day by day
For each date, find a likely temperature range, a risk of rain, and the most frequent weather type.
| Date | Temperatures | Rain | Dominant weather | History |
|---|---|---|---|---|
|
September 30, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
|
Risk of rain
83%
If rain:
moderate
|
rainy
49%
|
|
|
October 1, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
|
Risk of rain
83%
If rain:
moderate
|
rainy
50%
|
|
|
October 2, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
|
Risk of rain
82%
If rain:
moderate
|
rainy
49%
|
|
|
October 3, 2026
|
27°C /
30°C
Likely temperature:
27.5°C -
29.5°C
|
Risk of rain
82%
If rain:
moderate
|
rainy
49%
|
|
|
October 4, 2026
|
27°C /
30°C
Likely temperature:
27.5°C -
29.5°C
|
Risk of rain
81%
If rain:
moderate
|
rainy
49%
|
|
|
October 5, 2026
|
27°C /
30°C
Likely temperature:
27.5°C -
29.5°C
|
Risk of rain
81%
If rain:
moderate
|
rainy
48%
|
|
|
October 6, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
|
Risk of rain
80%
If rain:
moderate
|
rainy
48%
|
|
|
October 7, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
|
Risk of rain
80%
If rain:
moderate
|
rainy
48%
|
|
|
October 8, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
|
Risk of rain
81%
If rain:
moderate
|
rainy
48%
|
|
|
October 9, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
|
Risk of rain
81%
If rain:
moderate
|
rainy
48%
|
|
|
October 10, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
|
Risk of rain
82%
If rain:
moderate
|
rainy
48%
|
|
|
October 11, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
|
Risk of rain
82%
If rain:
moderate
|
rainy
48%
|
|
|
October 12, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
|
Risk of rain
82%
If rain:
moderate
|
rainy
48%
|
|
|
October 13, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
|
Risk of rain
82%
If rain:
moderate
|
rainy
48%
|
|
|
October 14, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
81%
If rain:
moderate
|
rainy
47%
|
|
|
October 15, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
81%
If rain:
moderate
|
rainy
47%
|
|
|
October 16, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
79%
If rain:
moderate
|
rainy
46%
|
|
|
October 17, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
78%
If rain:
moderate
|
rainy
45%
|
|
|
October 18, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
78%
If rain:
moderate
|
rainy
44%
|
|
|
October 19, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
78%
If rain:
moderate
|
rainy
44%
|
|
|
October 20, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
78%
If rain:
moderate
|
rainy
44%
|
|
|
October 21, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
78%
If rain:
moderate
|
rainy
44%
|
|
|
October 22, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
79%
If rain:
moderate
|
rainy
45%
|
|
|
October 23, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
81%
If rain:
moderate
|
rainy
46%
|
|
|
October 24, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
82%
If rain:
moderate
|
rainy
47%
|
|
|
October 25, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
83%
If rain:
moderate
|
rainy
48%
|
|
|
October 26, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
84%
If rain:
moderate
|
rainy
49%
|
|
|
October 27, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
84%
If rain:
moderate
|
rainy
49%
|
|
|
October 28, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
85%
If rain:
moderate
|
rainy
49%
|
|
|
October 29, 2026
|
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
|
Risk of rain
85%
If rain:
moderate
|
rainy
49%
|
September 30, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
Rain
Risk of rain
83%
If rain:
moderate
Dominant weather
rainy
49%
October 1, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
Rain
Risk of rain
83%
If rain:
moderate
Dominant weather
rainy
50%
October 2, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
Rain
Risk of rain
82%
If rain:
moderate
Dominant weather
rainy
49%
October 3, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.5°C -
29.5°C
Rain
Risk of rain
82%
If rain:
moderate
Dominant weather
rainy
49%
October 4, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.5°C -
29.5°C
Rain
Risk of rain
81%
If rain:
moderate
Dominant weather
rainy
49%
October 5, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.5°C -
29.5°C
Rain
Risk of rain
81%
If rain:
moderate
Dominant weather
rainy
48%
October 6, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
Rain
Risk of rain
80%
If rain:
moderate
Dominant weather
rainy
48%
October 7, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
Rain
Risk of rain
80%
If rain:
moderate
Dominant weather
rainy
48%
October 8, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
Rain
Risk of rain
81%
If rain:
moderate
Dominant weather
rainy
48%
October 9, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
Rain
Risk of rain
81%
If rain:
moderate
Dominant weather
rainy
48%
October 10, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
Rain
Risk of rain
82%
If rain:
moderate
Dominant weather
rainy
48%
October 11, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
Rain
Risk of rain
82%
If rain:
moderate
Dominant weather
rainy
48%
October 12, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
Rain
Risk of rain
82%
If rain:
moderate
Dominant weather
rainy
48%
October 13, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.5°C
Rain
Risk of rain
82%
If rain:
moderate
Dominant weather
rainy
48%
October 14, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
81%
If rain:
moderate
Dominant weather
rainy
47%
October 15, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
81%
If rain:
moderate
Dominant weather
rainy
47%
October 16, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
79%
If rain:
moderate
Dominant weather
rainy
46%
October 17, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
78%
If rain:
moderate
Dominant weather
rainy
45%
October 18, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
78%
If rain:
moderate
Dominant weather
rainy
44%
October 19, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
78%
If rain:
moderate
Dominant weather
rainy
44%
October 20, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
78%
If rain:
moderate
Dominant weather
rainy
44%
October 21, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
78%
If rain:
moderate
Dominant weather
rainy
44%
October 22, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
79%
If rain:
moderate
Dominant weather
rainy
45%
October 23, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
81%
If rain:
moderate
Dominant weather
rainy
46%
October 24, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
82%
If rain:
moderate
Dominant weather
rainy
47%
October 25, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
83%
If rain:
moderate
Dominant weather
rainy
48%
October 26, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
84%
If rain:
moderate
Dominant weather
rainy
49%
October 27, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
84%
If rain:
moderate
Dominant weather
rainy
49%
October 28, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
85%
If rain:
moderate
Dominant weather
rainy
49%
October 29, 2026
Temperatures
27°C /
30°C
Likely temperature:
27.8°C -
29.3°C
Rain
Risk of rain
85%
If rain:
moderate
Dominant weather
rainy
49%
This 30-day weather forecast in Tarakan allows you to quickly identify the mildest, wettest, or most changeable stretches in the coming month.
Week-by-week weather trend in Tarakan over 10 weeks
The maps below follow the actual calendar weeks, from Monday to Sunday, to identify the most favorable periods in the coming weeks in Tarakan.
Week 40
28 September - 4 October 2026
rainy
49%
sunny
31%
clearings
18%
Likely temperature
27°C / 30°C
Probable rain
5.8 days -
73 mm
Week 41
5 - 11 October 2026
rainy
48%
sunny
28%
clearings
21%
Likely temperature
27°C / 30°C
Probable rain
5.7 days -
69 mm
Week 42
12 - 18 October 2026
rainy
46%
sunny
32%
clearings
18%
Likely temperature
27°C / 30°C
Probable rain
5.6 days -
58 mm
Week 43
19 - 25 October 2026
rainy
45%
sunny
38%
clearings
13%
Likely temperature
27°C / 30°C
Probable rain
5.6 days -
62 mm
Week 44
26 October - 1 November 2026
rainy
48%
sunny
33%
clearings
16%
Likely temperature
27°C / 30°C
Probable rain
5.9 days -
71 mm
Week 45
2 - 8 November 2026
rainy
50%
sunny
31%
clearings
17%
Likely temperature
27°C / 30°C
Probable rain
5.9 days -
71 mm
Week 46
9 - 15 November 2026
rainy
61%
sunny
22%
clearings
16%
Likely temperature
27°C / 30°C
Probable rain
6.2 days -
72 mm
Week 47
16 - 22 November 2026
rainy
57%
sunny
23%
clearings
18%
Likely temperature
27°C / 30°C
Probable rain
6.3 days -
67 mm
Week 48
23 - 29 November 2026
rainy
62%
sunny
24%
clearings
13%
Likely temperature
27°C / 30°C
Probable rain
6.4 days -
65 mm
Week 49
30 November - 6 December 2026
rainy
64%
clearings
20%
sunny
16%
Likely temperature
26°C / 30°C
Probable rain
6.4 days -
69 mm
3-month weather trend in Tarakan
Temperatures, rain, sunshine and prevailing weather for the coming month and the following two months in Tarakan, Indonesian Borneo (Kalimantan).
September 2026
rainy
41%
sunny
32%
clearings
24%
Likely temperature
27°C / 30°C
Average temperature
29.1°C
Probable rain
281 mm
Rainy days
26 days
Average sun/day
11.6 h
Average wind
13 km/h
Average humidity
83%
Cloud cover
34%
October 2026
rainy
48%
sunny
33%
clearings
16%
Likely temperature
27°C / 30°C
Average temperature
28.7°C
Probable rain
301 mm
Rainy days
27 days
Average sun/day
11.3 h
Average wind
12 km/h
Average humidity
82%
Cloud cover
38%
November 2026
rainy
57%
sunny
26%
clearings
16%
Likely temperature
27°C / 29°C
Average temperature
28.2°C
Probable rain
295 mm
Rainy days
29 days
Average sun/day
10.6 h
Average wind
12 km/h
Average humidity
82%
Cloud cover
35%
This 3-month weather trend in Tarakan helps anticipate the next month and the two following for a stay, a departure, or seasonal planning.
Month-by-month weather forecast in Tarakan over 12 months
Easily compare over 1 year the likely weather for each upcoming month in Tarakan, Indonesian Borneo (Kalimantan) to choose the best time based on heat, rain, or sunshine.
September 2026
rainy
41%
sunny
32%
clearings
24%
27°C
30°C
281 mm
26 days
average confidence
October 2026
rainy
48%
sunny
33%
clearings
16%
27°C
30°C
301 mm
27 days
average confidence
November 2026
rainy
57%
sunny
26%
clearings
16%
27°C
29°C
295 mm
29 days
average confidence
December 2026
rainy
61%
clearings
19%
sunny
18%
26°C
29°C
377 mm
29 days
average confidence
January 2027
rainy
66%
sunny
19%
clearings
12%
26°C
29°C
346 mm
29 days
average confidence
February 2027
rainy
57%
sunny
26%
clearings
15%
26°C
29°C
249 mm
24 days
average confidence
March 2027
rainy
57%
sunny
28%
clearings
14%
26°C
29°C
277 mm
27 days
average confidence
April 2027
rainy
53%
sunny
27%
clearings
15%
27°C
30°C
274 mm
27 days
average confidence
May 2027
rainy
51%
sunny
27%
clearings
17%
27°C
30°C
311 mm
27 days
average confidence
June 2027
rainy
35%
sunny
33%
clearings
26%
27°C
30°C
199 mm
27 days
limited trust
July 2027
rainy
38%
clearings
29%
sunny
28%
cloudy
6%
26°C
30°C
236 mm
27 days
average confidence
August 2027
rainy
43%
sunny
32%
clearings
20%
26°C
30°C
254 mm
28 days
average confidence
This 12-month weather calendar in Tarakan makes it easy to compare the warmest, driest, or sunniest periods.
Compare these forecasts with the weather archives of Tarakan
To go further, consult the city's detailed weather archives and the available years to compare these trends with past observations.
Long-term weather forecast around of Tarakan
Find the towns near of Tarakan on the map and compare their long-term weather forecasts to choose the most favorable area.
Long-term weather forecast calculation method in Tarakan
These long-term weather trends in Tarakan are estimated from 18 years of observed weather. They are mainly useful for identifying the most favorable periods and do not replace short-term weather forecasts.
Number of years of history
18
Comparison window
target day +/- 7 days
Update
daily
Output type
weather trend based on history
How are these trends calculated
Same period, year after year
For each future day, we look at the comparable dates observed over 18 years, with a rolling window of 15 days around the target day.
More weight to recent years
The most recent years are weighted slightly more to better reflect recent changes in weather conditions.
How to read the prevailing weather
The prevailing weather corresponds to the most frequent weather scenario over the displayed period. The percentage indicates its estimated share, and the other weather types shown in smaller size display the possible secondary scenarios, especially useful in weekly or monthly forecasts.
Months are calculated separately
Monthly trends are calculated directly from historical months to avoid artificial daily accumulations.
How to read confidence levels
The confidence score summarizes how much the model runs converge on a stable weather scenario for the displayed period.
high confidence
70 to 100
Past years tell a fairly coherent story: temperatures, rainfall and weather type vary little around the dominant scenario.
average confidence
45 to 69
A clear trend exists, but with greater year-to-year variations. The result should be read as a probable direction.
limited trust
0 to 44
The archives are more scattered over this period. The displayed scenario remains useful as a reference, but it should be interpreted with caution.
In practice, confidence is generally more robust over months than over weeks, because longer periods smooth out weather variability more.
Limits to keep in mind
- This is a long-term trend based on historical data, not an operational weather forecast for a few days.
- Exceptional or very localized episodes may deviate significantly from the most likely scenario.
- Monthly trends are generally more reliable for choosing a period, while day-by-day detail is mainly used to refine pinpointing.