Long-term weather trends in Wahiawa: 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 Wahiawa, Hawaii, 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 Wahiawa, Hawaii
This summary helps quickly identify the major weather trends for the coming month in Wahiawa, Hawaii, before checking the day-by-day calendar below.
Average temperature
25.8°C
Likely rainy days / week
3.0 days
Dominant weather type
rainy
52%
To remember
The expected temperature remains close to the normals, around 25.8°C on average. The rain looks close to usual levels, with about 3.0 rainy days per week. The dominant scenario remains rainy, with about 52% recurrence and a high confidence.
These long-term predictions are calculated from 18 years of observed weather in Wahiawa. They allow identification of probable trends derived from historical data, and are not short-term weather forecasts.
30-day weather calendar in Wahiawa, 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
|
24°C /
28°C
Likely temperature:
25.8°C -
26.8°C
|
Risk of rain
45%
If rain:
weak
|
rainy
58%
|
|
|
October 1, 2026
|
24°C /
28°C
Likely temperature:
25.8°C -
26.8°C
|
Risk of rain
44%
If rain:
weak
|
rainy
57%
|
|
|
October 2, 2026
|
24°C /
28°C
Likely temperature:
25.5°C -
26.8°C
|
Risk of rain
43%
If rain:
weak
|
rainy
56%
|
|
|
October 3, 2026
|
24°C /
28°C
Likely temperature:
25.5°C -
26.5°C
|
Risk of rain
42%
If rain:
weak
|
rainy
56%
|
|
|
October 4, 2026
|
24°C /
28°C
Likely temperature:
25.5°C -
26.5°C
|
Risk of rain
41%
If rain:
weak
|
rainy
55%
|
|
|
October 5, 2026
|
24°C /
28°C
Likely temperature:
25.5°C -
26.5°C
|
Risk of rain
41%
If rain:
weak
|
rainy
55%
|
|
|
October 6, 2026
|
24°C /
28°C
Likely temperature:
25.5°C -
26.5°C
|
Risk of rain
41%
If rain:
weak
|
rainy
55%
|
|
|
October 7, 2026
|
24°C /
28°C
Likely temperature:
25.5°C -
26.5°C
|
Risk of rain
42%
If rain:
weak
|
rainy
55%
|
|
|
October 8, 2026
|
24°C /
28°C
Likely temperature:
25.5°C -
26.5°C
|
Risk of rain
43%
If rain:
weak
|
rainy
55%
|
|
|
October 9, 2026
|
24°C /
28°C
Likely temperature:
25.3°C -
26.3°C
|
Risk of rain
44%
If rain:
weak
|
rainy
56%
|
|
|
October 10, 2026
|
24°C /
28°C
Likely temperature:
25.3°C -
26.3°C
|
Risk of rain
45%
If rain:
weak
|
rainy
56%
|
|
|
October 11, 2026
|
24°C /
28°C
Likely temperature:
25.3°C -
26.3°C
|
Risk of rain
46%
If rain:
weak
|
rainy
56%
|
|
|
October 12, 2026
|
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
|
Risk of rain
46%
If rain:
weak
|
rainy
55%
|
|
|
October 13, 2026
|
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
|
Risk of rain
46%
If rain:
weak
|
rainy
54%
|
|
|
October 14, 2026
|
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
|
Risk of rain
46%
If rain:
weak
|
rainy
53%
|
|
|
October 15, 2026
|
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
|
Risk of rain
45%
If rain:
weak
|
rainy
52%
|
|
|
October 16, 2026
|
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
|
Risk of rain
45%
If rain:
weak
|
rainy
51%
|
|
|
October 17, 2026
|
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
|
Risk of rain
44%
If rain:
weak
|
rainy
50%
|
|
|
October 18, 2026
|
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
|
Risk of rain
43%
If rain:
weak
|
rainy
49%
|
|
|
October 19, 2026
|
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
|
Risk of rain
42%
If rain:
weak
|
rainy
49%
|
|
|
October 20, 2026
|
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
|
Risk of rain
41%
If rain:
weak
|
rainy
49%
|
|
|
October 21, 2026
|
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
|
Risk of rain
41%
If rain:
weak
|
rainy
49%
|
|
|
October 22, 2026
|
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
|
Risk of rain
40%
If rain:
weak
|
rainy
48%
|
|
|
October 23, 2026
|
24°C /
27°C
Likely temperature:
25.0°C -
26.3°C
|
Risk of rain
40%
If rain:
weak
|
rainy
48%
|
|
|
October 24, 2026
|
24°C /
27°C
Likely temperature:
25.0°C -
26.3°C
|
Risk of rain
40%
If rain:
weak
|
rainy
48%
|
|
|
October 25, 2026
|
23°C /
27°C
Likely temperature:
25.0°C -
26.3°C
|
Risk of rain
40%
If rain:
weak
|
rainy
48%
|
|
|
October 26, 2026
|
23°C /
27°C
Likely temperature:
25.0°C -
26.3°C
|
Risk of rain
40%
If rain:
weak
|
rainy
48%
|
|
|
October 27, 2026
|
23°C /
27°C
Likely temperature:
25.0°C -
26.3°C
|
Risk of rain
39%
If rain:
weak
|
rainy
48%
|
|
|
October 28, 2026
|
23°C /
27°C
Likely temperature:
25.0°C -
26.0°C
|
Risk of rain
39%
If rain:
weak
|
rainy
49%
|
|
|
October 29, 2026
|
23°C /
27°C
Likely temperature:
25.0°C -
26.0°C
|
Risk of rain
40%
If rain:
weak
|
rainy
49%
|
September 30, 2026
Temperatures
24°C /
28°C
Likely temperature:
25.8°C -
26.8°C
Rain
Risk of rain
45%
If rain:
weak
Dominant weather
rainy
58%
October 1, 2026
Temperatures
24°C /
28°C
Likely temperature:
25.8°C -
26.8°C
Rain
Risk of rain
44%
If rain:
weak
Dominant weather
rainy
57%
October 2, 2026
Temperatures
24°C /
28°C
Likely temperature:
25.5°C -
26.8°C
Rain
Risk of rain
43%
If rain:
weak
Dominant weather
rainy
56%
October 3, 2026
Temperatures
24°C /
28°C
Likely temperature:
25.5°C -
26.5°C
Rain
Risk of rain
42%
If rain:
weak
Dominant weather
rainy
56%
October 4, 2026
Temperatures
24°C /
28°C
Likely temperature:
25.5°C -
26.5°C
Rain
Risk of rain
41%
If rain:
weak
Dominant weather
rainy
55%
October 5, 2026
Temperatures
24°C /
28°C
Likely temperature:
25.5°C -
26.5°C
Rain
Risk of rain
41%
If rain:
weak
Dominant weather
rainy
55%
October 6, 2026
Temperatures
24°C /
28°C
Likely temperature:
25.5°C -
26.5°C
Rain
Risk of rain
41%
If rain:
weak
Dominant weather
rainy
55%
October 7, 2026
Temperatures
24°C /
28°C
Likely temperature:
25.5°C -
26.5°C
Rain
Risk of rain
42%
If rain:
weak
Dominant weather
rainy
55%
October 8, 2026
Temperatures
24°C /
28°C
Likely temperature:
25.5°C -
26.5°C
Rain
Risk of rain
43%
If rain:
weak
Dominant weather
rainy
55%
October 9, 2026
Temperatures
24°C /
28°C
Likely temperature:
25.3°C -
26.3°C
Rain
Risk of rain
44%
If rain:
weak
Dominant weather
rainy
56%
October 10, 2026
Temperatures
24°C /
28°C
Likely temperature:
25.3°C -
26.3°C
Rain
Risk of rain
45%
If rain:
weak
Dominant weather
rainy
56%
October 11, 2026
Temperatures
24°C /
28°C
Likely temperature:
25.3°C -
26.3°C
Rain
Risk of rain
46%
If rain:
weak
Dominant weather
rainy
56%
October 12, 2026
Temperatures
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
Rain
Risk of rain
46%
If rain:
weak
Dominant weather
rainy
55%
October 13, 2026
Temperatures
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
Rain
Risk of rain
46%
If rain:
weak
Dominant weather
rainy
54%
October 14, 2026
Temperatures
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
Rain
Risk of rain
46%
If rain:
weak
Dominant weather
rainy
53%
October 15, 2026
Temperatures
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
Rain
Risk of rain
45%
If rain:
weak
Dominant weather
rainy
52%
October 16, 2026
Temperatures
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
Rain
Risk of rain
45%
If rain:
weak
Dominant weather
rainy
51%
October 17, 2026
Temperatures
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
Rain
Risk of rain
44%
If rain:
weak
Dominant weather
rainy
50%
October 18, 2026
Temperatures
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
Rain
Risk of rain
43%
If rain:
weak
Dominant weather
rainy
49%
October 19, 2026
Temperatures
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
Rain
Risk of rain
42%
If rain:
weak
Dominant weather
rainy
49%
October 20, 2026
Temperatures
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
Rain
Risk of rain
41%
If rain:
weak
Dominant weather
rainy
49%
October 21, 2026
Temperatures
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
Rain
Risk of rain
41%
If rain:
weak
Dominant weather
rainy
49%
October 22, 2026
Temperatures
24°C /
27°C
Likely temperature:
25.3°C -
26.3°C
Rain
Risk of rain
40%
If rain:
weak
Dominant weather
rainy
48%
October 23, 2026
Temperatures
24°C /
27°C
Likely temperature:
25.0°C -
26.3°C
Rain
Risk of rain
40%
If rain:
weak
Dominant weather
rainy
48%
October 24, 2026
Temperatures
24°C /
27°C
Likely temperature:
25.0°C -
26.3°C
Rain
Risk of rain
40%
If rain:
weak
Dominant weather
rainy
48%
October 25, 2026
Temperatures
23°C /
27°C
Likely temperature:
25.0°C -
26.3°C
Rain
Risk of rain
40%
If rain:
weak
Dominant weather
rainy
48%
October 26, 2026
Temperatures
23°C /
27°C
Likely temperature:
25.0°C -
26.3°C
Rain
Risk of rain
40%
If rain:
weak
Dominant weather
rainy
48%
October 27, 2026
Temperatures
23°C /
27°C
Likely temperature:
25.0°C -
26.3°C
Rain
Risk of rain
39%
If rain:
weak
Dominant weather
rainy
48%
October 28, 2026
Temperatures
23°C /
27°C
Likely temperature:
25.0°C -
26.0°C
Rain
Risk of rain
39%
If rain:
weak
Dominant weather
rainy
49%
October 29, 2026
Temperatures
23°C /
27°C
Likely temperature:
25.0°C -
26.0°C
Rain
Risk of rain
40%
If rain:
weak
Dominant weather
rainy
49%
This 30-day weather forecast in Wahiawa allows you to quickly identify the mildest, wettest, or most changeable stretches in the coming month.
Week-by-week weather trend in Wahiawa 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 Wahiawa.
Week 40
28 September - 4 October 2026
rainy
57%
sunny
27%
clearings
14%
Likely temperature
24°C / 28°C
Probable rain
3.1 days -
20 mm
Week 41
5 - 11 October 2026
rainy
55%
sunny
28%
clearings
13%
Likely temperature
24°C / 28°C
Probable rain
3.0 days -
18 mm
Week 42
12 - 18 October 2026
rainy
52%
sunny
34%
clearings
9%
Likely temperature
24°C / 27°C
Probable rain
3.1 days -
19 mm
Week 43
19 - 25 October 2026
rainy
49%
sunny
37%
clearings
11%
Likely temperature
23°C / 27°C
Probable rain
2.8 days -
16 mm
Week 44
26 October - 1 November 2026
rainy
50%
sunny
33%
clearings
13%
Likely temperature
23°C / 27°C
Probable rain
2.8 days -
17 mm
Week 45
2 - 8 November 2026
rainy
55%
sunny
28%
clearings
13%
Likely temperature
23°C / 27°C
Probable rain
3.0 days -
14 mm
Week 46
9 - 15 November 2026
rainy
50%
sunny
29%
clearings
17%
Likely temperature
23°C / 26°C
Probable rain
2.6 days -
11 mm
Week 47
16 - 22 November 2026
rainy
47%
sunny
31%
clearings
18%
Likely temperature
22°C / 26°C
Probable rain
2.7 days -
14 mm
Week 48
23 - 29 November 2026
rainy
45%
sunny
33%
clearings
15%
cloudy
8%
Likely temperature
22°C / 25°C
Probable rain
2.8 days -
14 mm
Week 49
30 November - 6 December 2026
rainy
42%
sunny
33%
clearings
19%
cloudy
6%
Likely temperature
22°C / 25°C
Probable rain
2.7 days -
15 mm
3-month weather trend in Wahiawa
Temperatures, rain, sunshine and prevailing weather for the coming month and the following two months in Wahiawa, Hawaii.
September 2026
rainy
49%
sunny
36%
clearings
14%
Likely temperature
24°C / 28°C
Average temperature
26.2°C
Probable rain
50 mm
Rainy days
15 days
Average sun/day
9.8 h
Average wind
18 km/h
Average humidity
79%
Cloud cover
46%
October 2026
rainy
52%
sunny
32%
clearings
12%
Likely temperature
24°C / 28°C
Average temperature
25.7°C
Probable rain
61 mm
Rainy days
18 days
Average sun/day
8.7 h
Average wind
15 km/h
Average humidity
80%
Cloud cover
50%
November 2026
rainy
49%
sunny
30%
clearings
15%
Likely temperature
23°C / 26°C
Average temperature
24.4°C
Probable rain
49 mm
Rainy days
13 days
Average sun/day
7.1 h
Average wind
19 km/h
Average humidity
80%
Cloud cover
53%
This 3-month weather trend in Wahiawa helps anticipate the next month and the two following for a stay, a departure, or seasonal planning.
Month-by-month weather forecast in Wahiawa over 12 months
Easily compare over 1 year the likely weather for each upcoming month in Wahiawa, Hawaii to choose the best time based on heat, rain, or sunshine.
September 2026
rainy
49%
sunny
36%
clearings
14%
24°C
28°C
50 mm
15 days
average confidence
October 2026
rainy
52%
sunny
32%
clearings
12%
24°C
28°C
61 mm
18 days
average confidence
November 2026
rainy
49%
sunny
30%
clearings
15%
23°C
26°C
49 mm
13 days
average confidence
December 2026
rainy
46%
sunny
30%
clearings
18%
cloudy
5%
21°C
25°C
42 mm
13 days
average confidence
January 2027
rainy
41%
sunny
37%
clearings
17%
cloudy
5%
20°C
25°C
44 mm
10 days
average confidence
February 2027
rainy
52%
sunny
26%
clearings
16%
cloudy
5%
20°C
24°C
53 mm
11 days
average confidence
March 2027
rainy
49%
sunny
27%
clearings
14%
cloudy
10%
21°C
24°C
75 mm
16 days
average confidence
April 2027
rainy
53%
sunny
21%
clearings
16%
cloudy
10%
22°C
25°C
58 mm
16 days
average confidence
May 2027
rainy
60%
sunny
26%
clearings
9%
cloudy
5%
22°C
26°C
60 mm
19 days
average confidence
June 2027
rainy
52%
sunny
34%
clearings
11%
24°C
27°C
46 mm
17 days
average confidence
July 2027
rainy
55%
sunny
30%
clearings
11%
24°C
28°C
49 mm
19 days
average confidence
August 2027
rainy
51%
sunny
36%
clearings
10%
24°C
28°C
49 mm
17 days
average confidence
This 12-month weather calendar in Wahiawa makes it easy to compare the warmest, driest, or sunniest periods.
Compare these forecasts with the weather archives of Wahiawa
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 Wahiawa
Find the towns near of Wahiawa on the map and compare their long-term weather forecasts to choose the most favorable area.
Long-term weather forecast calculation method in Wahiawa
These long-term weather trends in Wahiawa 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.