Unlock deeper multi-jurisdiction research
Full sub-pages, saves, and alerts are available on paid plans.
Weather & Climate
Treffléan, Bretagne, France
Overview
Climate data and monthly weather averages for Treffléan.
Key Metrics
Annual Avg
12.5°C
Summer Avg
18.6°C
Winter Avg
6.8°C
Record High
36.8°C
Record Low
-7.5°C
Annual Precipitation
717.6 mm
Avg Humidity
82%
Summer Humidity
74%
Winter Humidity
90%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 14.2° | 6.7° | -7.5° | 78.4 | 91% | 34 | 63.7 |
| Feb | 17° | 6.5° | -6.5° | 63 | 88% | 56 | 72.1 |
| Mar | 20.9° | 8.3° | -3.3° | 59.8 | 86% | 101 | 71.4 |
| Apr | 23.6° | 10.8° | -1.4° | 46.2 | 82% | 147 | 61.3 |
| May | 27.7° | 13.8° | 2.2° | 51.1 | 80% | 181 | 55.9 |
| Jun | 32.8° | 17.3° | 5.5° | 44.4 | 76% | 188 | 57.3 |
| Jul | 34.2° | 19.3° | 9.8° | 43.1 | 73% | 189 | 57 |
| Aug | 36.8° | 19.1° | 9.6° | 44.3 | 73% | 162 | 49.3 |
| Sep | 30.4° | 16.9° | 6.5° | 40.5 | 75% | 124 | 55.4 |
| Oct | 26.9° | 13.8° | 1.7° | 77.2 | 84% | 73 | 66.1 |
| Nov | 19.3° | 10.1° | -2.9° | 82.8 | 88% | 41 | 67.2 |
| Dec | 15.2° | 7.2° | -4.2° | 86.8 | 91% | 29 | 75.2 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
Subscribe to unlock the full sub-page depth for additional jurisdictions.
You can keep discovering Oyster publicly, but full multi-jurisdiction depth, tracking, alerts, and exports are part of paid access.