Derval

Loire-Atlantique, Pays de la Loire, France

Unlock Minute-by-Minute Forecast

See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.

Current Weather

23°

Overcast

Feels Like: 23°

Min: 13°

Max: 24°

The next few hours will be partly cloudy, with today reaching 24°C and dropping to 14°C. The coming days will be mostly clear

Unlock Historical Data

Compare today's weather with yesterday's data and track temperature trends over time.

Hourly Forecast

23° 23° 21° 19° 18° 17° 16° 15° 14° 14° 14° 14° 15° 15° 15° 16° 17° 19° 21° 22° 22° 23° 23° 23°
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
Today
Tomorrow

Daylight Hours

08:06

Sunrise

19:47

Sunset

11 hours 40 minutes of sunlight today

Moon

Full Moon

19:36

Moonrise

07:37

Moonset

Daily Forecast

Today

13°
24°

Sunday

14°
23°

Monday

17°
22°

Tuesday

18°
26°

Wednesday

17°
22°

Thursday

13°
21°

Friday

10°
20°

Saturday

11°
21°

Sunday

12°
23°

Monday

14°
23°

Air Quality Data Available

Upgrade to access real-time air quality data for Derval.

UV Index

No protection needed
1 Low
Low Extreme

Humidity

47% Dry
Low High

Current stargazing conditions?

See sky darkness, moon phase, and the best viewing window for Derval.

View stargazing score

Weather in Derval tomorrow, September 27, 2026

Rain features in Derval on September 27, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. The first half of the day looks overcast, as cloud amounts reach about 100% around 07:00. Brighter weather, if it comes, waits until later.

Expect highs of 23°C and cooler readings close to 14°C. Moisture in the air spans 59%-88%, with the highest values around 08:00. Airflow remains manageable, reaching about 6.0 km/h around 15:00.

Expect persistent cloud later on, with amounts around 100% by 12:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 31.7 km on average, though it can drop toward 24.3 km in thicker cloud or showers. Expect sunrise at 08:08, sunset at 19:45, and 11 hours 36 minutes of sunlight today overall.

Overall, Derval on September 27, 2026 suits indoor plans or waterproof kit, especially while rain chances stay near 0% and the high sits around 23°C.

Frequently asked questions about weather in Derval

How warm does it get in Derval?

The warmest month in Derval is August, with average high temperatures of 25°C. The average temperature during this period is around 19°C.

How cold does it get in Derval?

The coldest month in Derval is January, with average low temperatures of 3°C. The average temperature during this period is around 6°C.

What is the wettest time of year in Derval?

The wettest month in Derval is October, with an average of 81mm of precipitation.

What is the driest time of year in Derval?

The driest month in Derval is August, with an average of 38mm of precipitation.

View full climate insights for Derval →

Airpult

Get accurate weather forecasts worldwide with real-time updates and severe weather alerts. Covering 6M+ locations with precise, reliable weather data.

© 2026 Samuenti GmbH. All rights reserved.

gb English
Metric (°C, km/h)