Climate and monthly weather forecastTreffléan, France
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Treffléan, France, with an average temperature fluctuating between 9.3°C (48.7°F) and 5.8°C (42.4°F). With average high and low temperatures of 9.3°C (48.7°F) and 5.8°C (42.4°F) respectively, January is Treffléan's coldest month. Weather in January »Weather in February
The last month of the winter, February, is also a frosty month in Treffléan, France, with an average temperature varying between 9.6°C (49.3°F) and 5.3°C (41.5°F). With the onset of February, Treffléan's average high-temperature clocks in at a still frosty 9.6°C (49.3°F), showing a minor fluctuation from the previous month. Weather in February »Weather in March
March, the first month of the spring in Treffléan, is a cool month, with an average temperature fluctuating between 6.2°C (43.2°F) and 11.3°C (52.3°F). Transitioning from February to March, Treffléan observes an average high-temperature of a fresh 11.3°C (52.3°F), differing subtly from the previous month. Weather in March »Weather in April
April is a mild spring month in Treffléan, France, with an average temperature varying between 13.8°C (56.8°F) and 7.7°C (45.9°F). Treffléan's April reports an average high-temperature of a refreshing 13.8°C (56.8°F), exhibiting a minor difference from March. Weather in April »Weather in May
The last month of the spring, May, is a refreshing month in Treffléan, France, with an average temperature fluctuating between 10.2°C (50.4°F) and 16.3°C (61.3°F). The arrival of May sees an average high-temperature of an enjoyable 16.3°C (61.3°F), hardly diverging from April's 13.8°C (56.8°F). Weather in May »Weather in June
June, the first month of the summer in Treffléan, is still a comfortable month, with an average temperature varying between 19°C (66.2°F) and 13.3°C (55.9°F). A minor adjustment in Treffléan's average high-temperature is noted with the start of June, touching a still enjoyable 19°C (66.2°F) from May's 16.3°C (61.3°F). Weather in June »Weather in July
July in Treffléan, France, is a pleasant summer month, with an average temperature varying between 21.3°C (70.3°F) and 14.8°C (58.6°F). The month of July sees the highest average temperatures, reaching 21.3°C (70.3°F) at the peak and 14.8°C (58.6°F) at the low. Weather in July »Weather in August
The last month of the summer, August, is another pleasant month in Treffléan, France, with an average temperature ranging between min 15°C (59°F) and max 21.2°C (70.2°F). During August, Treffléan observes a subtle ascent to a still agreeable 21.2°C (70.2°F) from July's 21.3°C (70.3°F) in the average high-temperature. Weather in August »Weather in September
The first month of the autumn, September, is still a comfortable month in Treffléan, France, with an average temperature ranging between max 19.7°C (67.5°F) and min 13.2°C (55.8°F). As Treffléan welcomes September, the average high-temperature is noted at a comfortable 19.7°C (67.5°F), closely aligning with the preceding month. Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Treffléan, France, with an average temperature varying between 11.8°C (53.2°F) and 16.5°C (61.7°F). The transition into October subtly indicates a reduction in the average high-temperature, down to a still enjoyable 16.5°C (61.7°F) from September's comfortable 19.7°C (67.5°F). Weather in October »Weather in November
November, the last month of the autumn in Treffléan, is also a fresh month, with an average temperature fluctuating between 12.7°C (54.9°F) and 9.2°C (48.6°F). Treffléan's weather subtly changes with the onset of November, barely falling from a comfortable 16.5°C (61.7°F) in October to a cool 12.7°C (54.9°F). Weather in November »Weather in December
The first month of the winter, December, is still a cool month in Treffléan, France, with an average temperature varying between 7.3°C (45.1°F) and 10.5°C (50.9°F). As December unfolds, the average high-temperature reaches a still fresh 10.5°C (50.9°F), hinting at a slight fluctuation from the previous month. Weather in December »Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Treffléan, January is the month with the lowest recorded average temperatures, measuring a high of 9.3°C (48.7°F) and a low of 5.8°C (42.4°F).
January and December, with an average relative humidity of 83%, are most humid months.
In Treffléan, during the entire year, the rain falls for 169.8 days and collects up to 593mm (23.35") of precipitation.
In Treffléan, snow does not fall in January, March, May through November.
In Treffléan, during the entire year, snow falls for 1.3 days and aggregates up to 3mm (0.12") of snow.
The month with the least sunshine in Treffléan is January, with an average of 4.5h of sunshine.
January through April, November and December, with an average maximum UV index of 3, are months with the lowest UV index.
Months with snowfall in Treffléan, France, are February, April and December.
The months with the most snowfall are February, April and December, with an average 1mm (0.04") of accumulated snow.
June has the longest days of the year, with an average of 15h and 54min of daylight.
June through August, with an average maximum UV index of 5, are months with the highest UV index.
With its average high temperature of 21.3°C (70.3°F) and a low of 14.8°C (58.6°F), July is regarded as the warmest month in Treffléan.
July has the most sunshine of the year in Treffléan, with an average of 10.7h of sunshine.
The months with the lowest humidity in Treffléan, France, are August and September, with an average relative humidity of 78%.
The month with the least rainfall is September, when the rain falls for 10 days and typically collects 24mm (0.94") of precipitation.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
November is the month with the most rainfall. Rain falls for 16.1 days and accumulates 81mm (3.19") of precipitation.
With an average of 8h and 30min of daylight, December has the shortest days of the year.
Average temperature
Treffléan, France
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (9.3°C).
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is February (5.3°C).
Average pressure
Treffléan, France
- Average pressure in January:
1017.8mbar - Average pressure in February:
1016.6mbar - Average pressure in March:
1016.7mbar - Average pressure in April:
1015.7mbar - Average pressure in May:
1017.4mbar - Average pressure in June:
1017.1mbar
- Average pressure in July:
1017.5mbar - Average pressure in August:
1017.4mbar - Average pressure in September:
1018.4mbar - Average pressure in October:
1016.5mbar - Average pressure in November:
1013mbar - Average pressure in December:
1018.6mbar
The month with the highest atmospheric pressure is December (1018.6mbar).
The month with the lowest atmospheric pressure is November (1013mbar).
Average wind speed
Treffléan, France
- Average wind speed in January:
22.5km/h - Average wind speed in February:
22.5km/h - Average wind speed in March:
20.6km/h - Average wind speed in April:
17.5km/h - Average wind speed in May:
16.7km/h - Average wind speed in June:
16.2km/h
- Average wind speed in July:
16km/h - Average wind speed in August:
15.5km/h - Average wind speed in September:
16.1km/h - Average wind speed in October:
18.3km/h - Average wind speed in November:
22.3km/h - Average wind speed in December:
22.9km/h
The windiest month (with the highest average wind speed) is December (22.9km/h).
The calmest month (with the lowest average wind speed) is August (15.5km/h).
Average humidity
Treffléan, France
The months with the highest relative humidity are January and December (83%).
The months with the lowest relative humidity are August and September (78%).
Average rainfall
Treffléan, France
The wettest month (with the highest rainfall) is November (81mm).
The driest month (with the least rainfall) is September (24mm).
Average rainfall days
Treffléan, France
- Average rainfall days in January:
17.7 days - Average rainfall days in February:
14.4 days - Average rainfall days in March:
14.5 days - Average rainfall days in April:
14.1 days - Average rainfall days in May:
14.1 days - Average rainfall days in June:
12.8 days
- Average rainfall days in July:
12.9 days - Average rainfall days in August:
13 days - Average rainfall days in September:
10 days - Average rainfall days in October:
14.1 days - Average rainfall days in November:
16.1 days - Average rainfall days in December:
16.1 days
The month with the highest number of rainy days is January (17.7 days).
The month with the least rainy days is September (10 days).
Average snowfall
Treffléan, France
The months with the highest snowfall are February, April and December (1mm).
The months with the least snowfall are January, March, May, June, July, August, September, October and November (0mm).
Average snowfall days
Treffléan, France
- Average snowfall days in January:
0.2 days - Average snowfall days in February:
0.5 days - Average snowfall days in March:
0.2 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.1 days - Average snowfall days in December:
0.2 days
The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Treffléan, France
- Average daylight in January:
8h and 54min - Average daylight in February:
10h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 42min - Average daylight in May:
15h and 12min - Average daylight in June:
15h and 54min
- Average daylight in July:
15h and 30min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 18min - Average daylight in December:
8h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in January:
4h and 30min - Average sunshine in February:
6h and 12min - Average sunshine in March:
6h and 42min - Average sunshine in April:
7h and 48min - Average sunshine in May:
9h and 6min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
10h and 42min - Average sunshine in August:
8h and 42min - Average sunshine in September:
8h and 0min - Average sunshine in October:
6h and 48min - Average sunshine in November:
4h and 36min - Average sunshine in December:
4h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days
Treffléan, France
- Average sunshine days in January:
11.2 days - Average sunshine days in February:
11.3 days - Average sunshine days in March:
13.7 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
14.3 days - Average sunshine days in June:
14 days
- Average sunshine days in July:
14.3 days - Average sunshine days in August:
15 days - Average sunshine days in September:
18.1 days - Average sunshine days in October:
13.5 days - Average sunshine days in November:
10.4 days - Average sunshine days in December:
11.4 days
The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is November (10.4 days).
Average UV index
Treffléan, France
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).
Average cloud cover
Treffléan, France
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility
Treffléan, France
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
