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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Trelly, France, with an average temperature ranging between min 3.7°C (38.7°F) and max 7.7°C (45.9°F). Trelly notes the coldest temperatures in January, with a high average of 7.7°C (45.9°F) and a low of 3.7°C (38.7°F). Weather in January »
Weather in February
The last month of the winter, February, is another chilly month in Trelly, France, with temperature in the range of an average high of 8.3°C (46.9°F) and an average low of 3.3°C (37.9°F). February's commencement is accompanied by an average high-temperature of a still frosty 8.3°C (46.9°F), diverging marginally from January's 7.7°C (45.9°F). Weather in February »
Weather in March
March, the first month of the spring in Trelly, is a cool month, with an average temperature ranging between min 4.4°C (39.9°F) and max 10.7°C (51.3°F). The onset of March manifests an average high-temperature of a cool 10.7°C (51.3°F), demonstrating a minor variation from the preceding month. Weather in March »
Weather in April
April in Trelly, France, is a mild spring month, with temperature in the range of an average high of 13.5°C (56.3°F) and an average low of 5.6°C (42.1°F). An average high-temperature of a moderate 13.5°C (56.3°F) marks April, exhibiting a close resemblance to the conditions in March. Weather in April »
Weather in May
May, the last month of the spring in Trelly, is also a moderate month, with temperature in the range of an average high of 15.6°C (60.1°F) and an average low of 8°C (46.4°F). The onset of May brings an average high-temperature of a still mild 15.6°C (60.1°F), nearly matching the April temperature. Weather in May »
Weather in June
June, the first month of the summer in Trelly, is an enjoyable month, with an average temperature fluctuating between 10.8°C (51.4°F) and 18.5°C (65.3°F). June's commencement is accompanied by an average high-temperature of a comfortable 18.5°C (65.3°F), diverging marginally from May's 15.6°C (60.1°F). Weather in June »
Weather in July
July is an agreeable summer month in Trelly, France, with temperature in the range of an average high of 20.8°C (69.4°F) and an average low of 12.8°C (55°F). Trelly records an average high-temperature of an agreeable 20.8°C (69.4°F) in July, maintaining a close correlation with June's 18.5°C (65.3°F). Weather in July »
Weather in August
August, the last month of the summer in Trelly, is another pleasant month, with an average temperature varying between 12.9°C (55.2°F) and 21°C (69.8°F). August, on average, is the warmest month, registering a high temperature of 21°C (69.8°F) and a low of 12.9°C (55.2°F). Weather in August »
Weather in September
The first month of the autumn, September, is also an enjoyable month in Trelly, France, with an average temperature ranging between min 11.4°C (52.5°F) and max 18.9°C (66°F). Trelly experiences an average high-temperature of a refreshing 18.9°C (66°F) in September, marking an insignificant shift from 21°C (69.8°F) in August. Weather in September »
Weather in October
October, the same as September, in Trelly, France, is a moderate autumn month, with an average temperature fluctuating between 15.6°C (60.1°F) and 9.7°C (49.5°F). A mild drop in Trelly's average high-temperature is observed in October, transitioning from a refreshing 18.9°C (66°F) in September to a mild 15.6°C (60.1°F). Weather in October »
Weather in November
November, the last month of the autumn in Trelly, is also a fresh month, with an average temperature ranging between min 6.6°C (43.9°F) and max 11°C (51.8°F). November's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from October's moderate 15.6°C (60.1°F) to a cool 11°C (51.8°F). Weather in November »
Weather in December
The first month of the winter, December, is also a frosty month in Trelly, France, with an average temperature ranging between max 8.8°C (47.8°F) and min 4.9°C (40.8°F). The beginning of December reveals an average high-temperature of a chilly 8.8°C (47.8°F), showing minimal deviation 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
What month is the coldest in Trelly?
January, with an average high of 7.7°C (45.9°F) and a low of 3.7°C (38.7°F), signifies the coldest month of the year in Trelly.
What are the most humid months in Trelly?
The months with the highest humidity are January, November and December, with an average relative humidity of 86%.
How many days does it rain in Trelly?
Throughout the year, in Trelly, France, there are 197.4 rainfall days, and 564mm (22.2") of precipitation is accumulated.
When does it snow in Trelly?
January through April, November and December are months with snowfall.
How much does it snow in Trelly?
Throughout the year, in Trelly, France, there are 7.7 snowfall days, and 43mm (1.69") of snow is accumulated.
What are the months with the least sunshine in Trelly?
The months with the least sunshine in Trelly, France, are January and November, with an average of 3.9h of sunshine.
When is the lowest UV index in Trelly?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
When does it snow the most in Trelly?
February is the month with the most snowfall in Trelly, France. Snow falls for 2.7 days and accumulates 15mm (0.59") of snow.
When it does not snow in Trelly?
May through October are months without snowfall in Trelly.
When are the longest days in Trelly?
With an average of 16h and 6min of daylight, June has the longest days of the year in Trelly.
What are the least humid months in Trelly?
The months with the lowest humidity in Trelly, France, are July through September, with an average relative humidity of 81%.
What month has the most sunshine in Trelly?
July has the most sunshine of the year, with an average of 9.8h of sunshine.
What is the month with the highest UV index in Trelly?
July is the month with the highest UV index, with an average maximum UV index of 5.
What time of the year is the hottest in Trelly?
August, characterized by an average high temperature of 21°C (69.8°F) and a low temperature of 12.9°C (55.2°F), is generally the warmest month in Trelly.
What is the driest month in Trelly?
The month with the least rainfall is September, when the rain falls for 13.1 days and typically collects 25mm (0.98") of precipitation.
When is Daylight Saving Time (DST) in Trelly?
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Trelly, 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.
What is the rainiest month in Trelly?
December is the month with the most rainfall. Rain falls for 18.4 days and accumulates 80mm (3.15") of precipitation.
What is the month with the shortest days in Trelly?
With an average of 8h and 18min of daylight, December has the shortest days of the year.
Average temperature
Trelly, France
The warmest month (with the highest average high temperature) is August (21°C).
The month with the lowest average high temperature is January (7.7°C).
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is February (3.3°C).
Average pressure
Trelly, France
- Average pressure in January:
1016.8mbar - Average pressure in February:
1015.7mbar - Average pressure in March:
1016.4mbar - Average pressure in April:
1015.7mbar - Average pressure in May:
1017.2mbar - Average pressure in June:
1016.9mbar
- Average pressure in July:
1016.8mbar - Average pressure in August:
1016.6mbar - Average pressure in September:
1018mbar - Average pressure in October:
1016.2mbar - Average pressure in November:
1012.2mbar - Average pressure in December:
1017.3mbar
The month with the highest atmospheric pressure is September (1018mbar).
The month with the lowest atmospheric pressure is November (1012.2mbar).
Average wind speed
Trelly, France
- Average wind speed in January:
20.4km/h - Average wind speed in February:
20.8km/h - Average wind speed in March:
18.7km/h - Average wind speed in April:
15.5km/h - Average wind speed in May:
15km/h - Average wind speed in June:
14.4km/h
- Average wind speed in July:
13.7km/h - Average wind speed in August:
13.2km/h - Average wind speed in September:
14.4km/h - Average wind speed in October:
16.3km/h - Average wind speed in November:
19.4km/h - Average wind speed in December:
20.9km/h
The windiest month (with the highest average wind speed) is December (20.9km/h).
The calmest month (with the lowest average wind speed) is August (13.2km/h).
Average humidity
Trelly, France
The months with the highest relative humidity are January, November and December (86%).
The months with the lowest relative humidity are July, August and September (81%).
Average rainfall
Trelly, France
The wettest month (with the highest rainfall) is December (80mm).
The driest month (with the least rainfall) is September (25mm).
Average rainfall days
Trelly, France
- Average rainfall days in January:
19.3 days - Average rainfall days in February:
16.3 days - Average rainfall days in March:
17 days - Average rainfall days in April:
15.9 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
16.2 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
13.1 days - Average rainfall days in October:
15.7 days - Average rainfall days in November:
17.6 days - Average rainfall days in December:
18.4 days
The month with the highest number of rainy days is January (19.3 days).
The month with the least rainy days is September (13.1 days).
Average snowfall
Trelly, France
The month with the highest snowfall is February (15mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days
Trelly, France
- Average snowfall days in January:
2.1 days - Average snowfall days in February:
2.7 days - Average snowfall days in March:
0.9 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:
0.5 days - Average snowfall days in December:
1.4 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Trelly, France
- Average daylight in January:
8h and 5min - Average daylight in February:
10h and 1min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 2min - Average daylight in June:
16h and 1min
- Average daylight in July:
15h and 4min - Average daylight in August:
14h and 2min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 1min - Average daylight in December:
8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
5h and 1min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 2min - Average sunshine in May:
8h and 1min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
7h and 5min - Average sunshine in September:
7h and 1min - Average sunshine in October:
5h and 5min - Average sunshine in November:
3h and 5min - Average sunshine in December:
4h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The months with the least sunshine are January and November (Average sunshine: 3h and 54min).
Average sunshine days
Trelly, France
- Average sunshine days in January:
8.5 days - Average sunshine days in February:
7.6 days - Average sunshine days in March:
10.8 days - Average sunshine days in April:
10.9 days - Average sunshine days in May:
11.4 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
11.6 days - Average sunshine days in August:
10.8 days - Average sunshine days in September:
14.4 days - Average sunshine days in October:
11.7 days - Average sunshine days in November:
8.6 days - Average sunshine days in December:
7.7 days
The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is February (7.6 days).
Average UV index
Trelly, France
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Trelly, France
The months with the most cloud cover are January and November (Cloud cover 61).
The months with the least cloud cover are July and September (Cloud cover 42).
Average visibility
Trelly, France
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
