Long-term weather trends in Quimper: 30-day, 3-month and 12-month forecasts
Weather trend
Based on 18 years of archives
Calculated on 3 September 2026
Find long-term weather in Quimper, Brittany, 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 Quimper, Brittany
This summary helps quickly identify the major weather trends for the coming month in Quimper, Brittany, before checking the day-by-day calendar below.
Average temperature
14.7°C
Likely rainy days / week
2.9 days
Dominant weather type
rainy
39%
To remember
The expected temperature remains close to the normals, around 14.7°C on average. The rain looks close to usual levels, with about 2.9 rainy days per week. The dominant scenario remains rainy, with about 39% recurrence and a average confidence.
These long-term predictions are calculated from 18 years of observed weather in Quimper. They allow identification of probable trends derived from historical data, and are not short-term weather forecasts.
30-day weather calendar in Quimper, 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
|
13°C /
18°C
Likely temperature:
14.5°C -
17.0°C
|
Risk of rain
39%
If rain:
weak
|
rainy
37%
|
|
|
October 1, 2026
|
13°C /
17°C
Likely temperature:
14.5°C -
17.0°C
|
Risk of rain
40%
If rain:
weak
|
rainy
37%
|
|
|
October 2, 2026
|
13°C /
17°C
Likely temperature:
14.5°C -
16.8°C
|
Risk of rain
40%
If rain:
weak
|
rainy
37%
|
|
|
October 3, 2026
|
13°C /
17°C
Likely temperature:
14.5°C -
16.8°C
|
Risk of rain
41%
If rain:
weak
|
rainy
36%
|
|
|
October 4, 2026
|
13°C /
17°C
Likely temperature:
14.3°C -
16.5°C
|
Risk of rain
41%
If rain:
weak
|
rainy
35%
|
|
|
October 5, 2026
|
13°C /
17°C
Likely temperature:
14.3°C -
16.5°C
|
Risk of rain
41%
If rain:
weak
|
rainy
35%
|
|
|
October 6, 2026
|
13°C /
17°C
Likely temperature:
14.0°C -
16.5°C
|
Risk of rain
40%
If rain:
weak
|
rainy
34%
|
|
|
October 7, 2026
|
12°C /
17°C
Likely temperature:
14.0°C -
16.5°C
|
Risk of rain
39%
If rain:
weak
|
rainy
33%
|
|
|
October 8, 2026
|
12°C /
17°C
Likely temperature:
14.0°C -
16.3°C
|
Risk of rain
37%
If rain:
weak
|
rainy
32%
|
|
|
October 9, 2026
|
12°C /
17°C
Likely temperature:
13.8°C -
16.3°C
|
Risk of rain
36%
If rain:
weak
|
rainy
32%
|
|
|
October 10, 2026
|
12°C /
17°C
Likely temperature:
13.8°C -
16.3°C
|
Risk of rain
34%
If rain:
weak
|
rainy
32%
|
|
|
October 11, 2026
|
12°C /
17°C
Likely temperature:
13.5°C -
16.3°C
|
Risk of rain
34%
If rain:
weak
|
rainy
32%
|
|
|
October 12, 2026
|
12°C /
17°C
Likely temperature:
13.5°C -
16.3°C
|
Risk of rain
33%
If rain:
weak
|
rainy
32%
|
|
|
October 13, 2026
|
12°C /
17°C
Likely temperature:
13.5°C -
16.3°C
|
Risk of rain
34%
If rain:
weak
|
rainy
33%
|
|
|
October 14, 2026
|
12°C /
17°C
Likely temperature:
13.3°C -
16.3°C
|
Risk of rain
35%
If rain:
weak
|
rainy
34%
|
|
|
October 15, 2026
|
12°C /
17°C
Likely temperature:
13.3°C -
16.0°C
|
Risk of rain
37%
If rain:
weak
|
rainy
35%
|
|
|
October 16, 2026
|
12°C /
16°C
Likely temperature:
13.0°C -
16.0°C
|
Risk of rain
39%
If rain:
weak
|
rainy
37%
|
|
|
October 17, 2026
|
12°C /
16°C
Likely temperature:
13.0°C -
15.8°C
|
Risk of rain
42%
If rain:
weak
|
rainy
38%
|
|
|
October 18, 2026
|
12°C /
16°C
Likely temperature:
13.0°C -
15.5°C
|
Risk of rain
44%
If rain:
weak
|
rainy
40%
|
|
|
October 19, 2026
|
12°C /
16°C
Likely temperature:
12.8°C -
15.5°C
|
Risk of rain
46%
If rain:
weak
|
rainy
41%
|
|
|
October 20, 2026
|
12°C /
16°C
Likely temperature:
12.8°C -
15.5°C
|
Risk of rain
48%
If rain:
weak
|
rainy
42%
|
|
|
October 21, 2026
|
12°C /
16°C
Likely temperature:
12.8°C -
15.5°C
|
Risk of rain
48%
If rain:
weak
|
rainy
43%
|
|
|
October 22, 2026
|
12°C /
16°C
Likely temperature:
12.8°C -
15.3°C
|
Risk of rain
48%
If rain:
weak
|
rainy
44%
|
|
|
October 23, 2026
|
12°C /
16°C
Likely temperature:
12.8°C -
15.3°C
|
Risk of rain
48%
If rain:
weak
|
rainy
45%
|
|
|
October 24, 2026
|
12°C /
16°C
Likely temperature:
12.8°C -
15.3°C
|
Risk of rain
47%
If rain:
weak
|
rainy
46%
|
|
|
October 25, 2026
|
12°C /
16°C
Likely temperature:
12.8°C -
15.3°C
|
Risk of rain
47%
If rain:
weak
|
rainy
47%
|
|
|
October 26, 2026
|
12°C /
16°C
Likely temperature:
13.0°C -
15.3°C
|
Risk of rain
47%
If rain:
weak
|
rainy
48%
|
|
|
October 27, 2026
|
13°C /
15°C
Likely temperature:
13.0°C -
15.3°C
|
Risk of rain
48%
If rain:
weak
|
rainy
49%
|
|
|
October 28, 2026
|
13°C /
15°C
Likely temperature:
13.0°C -
15.3°C
|
Risk of rain
50%
If rain:
weak
|
rainy
51%
|
|
|
October 29, 2026
|
13°C /
15°C
Likely temperature:
12.8°C -
15.3°C
|
Risk of rain
52%
If rain:
light
|
rainy
52%
|
September 30, 2026
Temperatures
13°C /
18°C
Likely temperature:
14.5°C -
17.0°C
Rain
Risk of rain
39%
If rain:
weak
Dominant weather
rainy
37%
October 1, 2026
Temperatures
13°C /
17°C
Likely temperature:
14.5°C -
17.0°C
Rain
Risk of rain
40%
If rain:
weak
Dominant weather
rainy
37%
October 2, 2026
Temperatures
13°C /
17°C
Likely temperature:
14.5°C -
16.8°C
Rain
Risk of rain
40%
If rain:
weak
Dominant weather
rainy
37%
October 3, 2026
Temperatures
13°C /
17°C
Likely temperature:
14.5°C -
16.8°C
Rain
Risk of rain
41%
If rain:
weak
Dominant weather
rainy
36%
October 4, 2026
Temperatures
13°C /
17°C
Likely temperature:
14.3°C -
16.5°C
Rain
Risk of rain
41%
If rain:
weak
Dominant weather
rainy
35%
October 5, 2026
Temperatures
13°C /
17°C
Likely temperature:
14.3°C -
16.5°C
Rain
Risk of rain
41%
If rain:
weak
Dominant weather
rainy
35%
October 6, 2026
Temperatures
13°C /
17°C
Likely temperature:
14.0°C -
16.5°C
Rain
Risk of rain
40%
If rain:
weak
Dominant weather
rainy
34%
October 7, 2026
Temperatures
12°C /
17°C
Likely temperature:
14.0°C -
16.5°C
Rain
Risk of rain
39%
If rain:
weak
Dominant weather
rainy
33%
October 8, 2026
Temperatures
12°C /
17°C
Likely temperature:
14.0°C -
16.3°C
Rain
Risk of rain
37%
If rain:
weak
Dominant weather
rainy
32%
October 9, 2026
Temperatures
12°C /
17°C
Likely temperature:
13.8°C -
16.3°C
Rain
Risk of rain
36%
If rain:
weak
Dominant weather
rainy
32%
October 10, 2026
Temperatures
12°C /
17°C
Likely temperature:
13.8°C -
16.3°C
Rain
Risk of rain
34%
If rain:
weak
Dominant weather
rainy
32%
October 11, 2026
Temperatures
12°C /
17°C
Likely temperature:
13.5°C -
16.3°C
Rain
Risk of rain
34%
If rain:
weak
Dominant weather
rainy
32%
October 12, 2026
Temperatures
12°C /
17°C
Likely temperature:
13.5°C -
16.3°C
Rain
Risk of rain
33%
If rain:
weak
Dominant weather
rainy
32%
October 13, 2026
Temperatures
12°C /
17°C
Likely temperature:
13.5°C -
16.3°C
Rain
Risk of rain
34%
If rain:
weak
Dominant weather
rainy
33%
October 14, 2026
Temperatures
12°C /
17°C
Likely temperature:
13.3°C -
16.3°C
Rain
Risk of rain
35%
If rain:
weak
Dominant weather
rainy
34%
October 15, 2026
Temperatures
12°C /
17°C
Likely temperature:
13.3°C -
16.0°C
Rain
Risk of rain
37%
If rain:
weak
Dominant weather
rainy
35%
October 16, 2026
Temperatures
12°C /
16°C
Likely temperature:
13.0°C -
16.0°C
Rain
Risk of rain
39%
If rain:
weak
Dominant weather
rainy
37%
October 17, 2026
Temperatures
12°C /
16°C
Likely temperature:
13.0°C -
15.8°C
Rain
Risk of rain
42%
If rain:
weak
Dominant weather
rainy
38%
October 18, 2026
Temperatures
12°C /
16°C
Likely temperature:
13.0°C -
15.5°C
Rain
Risk of rain
44%
If rain:
weak
Dominant weather
rainy
40%
October 19, 2026
Temperatures
12°C /
16°C
Likely temperature:
12.8°C -
15.5°C
Rain
Risk of rain
46%
If rain:
weak
Dominant weather
rainy
41%
October 20, 2026
Temperatures
12°C /
16°C
Likely temperature:
12.8°C -
15.5°C
Rain
Risk of rain
48%
If rain:
weak
Dominant weather
rainy
42%
October 21, 2026
Temperatures
12°C /
16°C
Likely temperature:
12.8°C -
15.5°C
Rain
Risk of rain
48%
If rain:
weak
Dominant weather
rainy
43%
October 22, 2026
Temperatures
12°C /
16°C
Likely temperature:
12.8°C -
15.3°C
Rain
Risk of rain
48%
If rain:
weak
Dominant weather
rainy
44%
October 23, 2026
Temperatures
12°C /
16°C
Likely temperature:
12.8°C -
15.3°C
Rain
Risk of rain
48%
If rain:
weak
Dominant weather
rainy
45%
October 24, 2026
Temperatures
12°C /
16°C
Likely temperature:
12.8°C -
15.3°C
Rain
Risk of rain
47%
If rain:
weak
Dominant weather
rainy
46%
October 25, 2026
Temperatures
12°C /
16°C
Likely temperature:
12.8°C -
15.3°C
Rain
Risk of rain
47%
If rain:
weak
Dominant weather
rainy
47%
October 26, 2026
Temperatures
12°C /
16°C
Likely temperature:
13.0°C -
15.3°C
Rain
Risk of rain
47%
If rain:
weak
Dominant weather
rainy
48%
October 27, 2026
Temperatures
13°C /
15°C
Likely temperature:
13.0°C -
15.3°C
Rain
Risk of rain
48%
If rain:
weak
Dominant weather
rainy
49%
October 28, 2026
Temperatures
13°C /
15°C
Likely temperature:
13.0°C -
15.3°C
Rain
Risk of rain
50%
If rain:
weak
Dominant weather
rainy
51%
October 29, 2026
Temperatures
13°C /
15°C
Likely temperature:
12.8°C -
15.3°C
Rain
Risk of rain
52%
If rain:
light
Dominant weather
rainy
52%
This 30-day weather forecast in Quimper allows you to quickly identify the mildest, wettest, or most changeable stretches in the coming month.
Week-by-week weather trend in Quimper 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 Quimper.
Week 40
28 September - 4 October 2026
rainy
37%
sunny
35%
clearings
18%
cloudy
11%
Likely temperature
13°C / 18°C
Probable rain
2.8 days -
26 mm
Week 41
5 - 11 October 2026
rainy
33%
sunny
31%
clearings
22%
cloudy
14%
Likely temperature
12°C / 17°C
Probable rain
2.6 days -
22 mm
Week 42
12 - 18 October 2026
rainy
36%
sunny
31%
clearings
20%
cloudy
13%
Likely temperature
12°C / 17°C
Probable rain
2.6 days -
20 mm
Week 43
19 - 25 October 2026
rainy
44%
sunny
24%
clearings
18%
cloudy
13%
Likely temperature
12°C / 16°C
Probable rain
3.3 days -
25 mm
Week 44
26 October - 1 November 2026
rainy
51%
sunny
22%
clearings
15%
cloudy
11%
Likely temperature
12°C / 16°C
Probable rain
3.7 days -
29 mm
Week 45
2 - 8 November 2026
rainy
51%
sunny
19%
clearings
15%
cloudy
14%
Likely temperature
11°C / 15°C
Probable rain
4.2 days -
35 mm
Week 46
9 - 15 November 2026
rainy
44%
sunny
22%
cloudy
17%
clearings
17%
Likely temperature
11°C / 14°C
Probable rain
3.6 days -
31 mm
Week 47
16 - 22 November 2026
rainy
43%
sunny
21%
clearings
19%
cloudy
16%
Likely temperature
9°C / 14°C
Probable rain
3.4 days -
29 mm
Week 48
23 - 29 November 2026
rainy
42%
clearings
22%
cloudy
21%
sunny
14%
Likely temperature
9°C / 12°C
Probable rain
3.5 days -
29 mm
Week 49
30 November - 6 December 2026
rainy
41%
cloudy
21%
sunny
19%
clearings
17%
Likely temperature
8°C / 11°C
Probable rain
3.5 days -
25 mm
3-month weather trend in Quimper
Temperatures, rain, sunshine and prevailing weather for the coming month and the following two months in Quimper, Brittany.
September 2026
sunny
35%
rainy
30%
clearings
24%
cloudy
11%
Likely temperature
13°C / 20°C
Average temperature
17.2°C
Probable rain
48 mm
Rainy days
8 days
Average sun/day
10.1 h
Average wind
19 km/h
Average humidity
88%
Cloud cover
41%
October 2026
rainy
40%
sunny
27%
clearings
19%
cloudy
13%
Likely temperature
12°C / 16°C
Average temperature
14.5°C
Probable rain
76 mm
Rainy days
11 days
Average sun/day
8.6 h
Average wind
22 km/h
Average humidity
89%
Cloud cover
48%
November 2026
rainy
45%
sunny
19%
clearings
19%
cloudy
17%
Likely temperature
10°C / 13°C
Average temperature
11.5°C
Probable rain
81 mm
Rainy days
15 days
Average sun/day
6.0 h
Average wind
24 km/h
Average humidity
86%
Cloud cover
56%
This 3-month weather trend in Quimper helps anticipate the next month and the two following for a stay, a departure, or seasonal planning.
Month-by-month weather forecast in Quimper over 12 months
Easily compare over 1 year the likely weather for each upcoming month in Quimper, Brittany to choose the best time based on heat, rain, or sunshine.
September 2026
sunny
35%
rainy
30%
clearings
24%
cloudy
11%
13°C
20°C
48 mm
8 days
average confidence
October 2026
rainy
40%
sunny
27%
clearings
19%
cloudy
13%
12°C
16°C
76 mm
11 days
average confidence
November 2026
rainy
45%
sunny
19%
clearings
19%
cloudy
17%
10°C
13°C
81 mm
15 days
average confidence
December 2026
rainy
44%
sunny
19%
cloudy
18%
clearings
17%
8°C
11°C
131 mm
17 days
average confidence
January 2027
rainy
41%
cloudy
20%
sunny
18%
clearings
18%
6°C
10°C
118 mm
16 days
average confidence
February 2027
rainy
41%
sunny
22%
clearings
20%
cloudy
15%
8°C
10°C
113 mm
13 days
average confidence
March 2027
rainy
36%
sunny
28%
cloudy
18%
clearings
16%
7°C
11°C
71 mm
12 days
average confidence
April 2027
sunny
35%
rainy
30%
clearings
20%
cloudy
15%
8°C
14°C
42 mm
9 days
average confidence
May 2027
rainy
34%
sunny
31%
clearings
19%
cloudy
15%
11°C
17°C
63 mm
11 days
average confidence
June 2027
sunny
37%
rainy
34%
clearings
18%
cloudy
10%
14°C
20°C
56 mm
8 days
limited trust
July 2027
sunny
40%
rainy
33%
clearings
18%
cloudy
9%
16°C
21°C
74 mm
10 days
limited trust
August 2027
sunny
39%
rainy
29%
clearings
22%
cloudy
10%
15°C
21°C
47 mm
10 days
average confidence
This 12-month weather calendar in Quimper makes it easy to compare the warmest, driest, or sunniest periods.
Compare these forecasts with the weather archives of Quimper
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 Quimper
Find the towns near of Quimper on the map and compare their long-term weather forecasts to choose the most favorable area.
Long-term weather forecast calculation method in Quimper
These long-term weather trends in Quimper 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.