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Hourly Forecast
Daylight Hours
07:42
Sunrise
19:44
Sunset
Moon
Waxing Gibbous
17:37
Moonrise
01:01
Moonset
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View stargazing scoreWeather in Dunkerque tomorrow, September 21, 2026
Dunkerque stays under cloudy skies on September 21, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open. The morning sky stays heavily clouded, with cover near 100% around 04:00. Grey conditions set the early tone before any later change.
The day peaks near 18°C and cools toward 14°C. Moisture in the air spans 58%-82%, with the highest values around 07:00. Airflow remains manageable, reaching about 2.4 km/h around 13:00.
The afternoon keeps an overcast feel, as cloud reaches about 97% around 12:00. Outdoor plans may still want a flexible backup. Expect visibility near 35.2 km, with poorer spells close to 29.8 km. Daylight runs from 07:43 to 19:41, lasting 11 hours 58 minutes of sunlight today.
The practical takeaway for Dunkerque on September 21, 2026 is a cloudy day that stays usable, just not particularly bright, around 18°C.
Frequently asked questions about weather in Dunkerque
How warm does it get in Dunkerque?
The warmest month in Dunkerque is August, with average high temperatures of 23°C. The average temperature during this period is around 19°C.
How cold does it get in Dunkerque?
The coldest month in Dunkerque is January, with average low temperatures of 3°C. The average temperature during this period is around 5°C.
What is the wettest time of year in Dunkerque?
The wettest month in Dunkerque is October, with an average of 74mm of precipitation.
What is the driest time of year in Dunkerque?
The driest month in Dunkerque is July, with an average of 51mm of precipitation.
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