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Hourly Forecast
Daylight Hours
07:41
Sunrise
19:22
Sunset
Moon
Waxing Gibbous
18:56
Moonrise
05:51
Moonset
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View stargazing scoreWeather in Haarlem today, September 25, 2026
Haarlem is set for a fine, sunny day on September 25, 2026, with only limited interruptions to the clear sky. The early hours look particularly favourable for being outside. Cloud leads the morning, peaking close to 100% near 05:00. Sunshine has little room until later in the day.
Expect highs of 21°C and cooler readings close to 10°C. Relative humidity sits between 51% and 90%, reaching its peak around 05:00. Winds stay light, near 2.7 km/h by 12:00, so the day feels still more than breezy.
Expect persistent cloud later on, with amounts around 100% by 23:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 32.9 km on average, though it can drop toward 18.6 km in thicker cloud or showers. The sun rises at 07:41 and sets at 19:22, for a total of 11 hours 41 minutes of sunlight today.
The practical takeaway for Haarlem is a bright September 25, 2026, ideal for outdoor errands before temperatures ease from about 21°C.
Frequently asked questions about weather in Haarlem
How warm does it get in Haarlem?
The warmest month in Haarlem is August, with average high temperatures of 21°C. The average temperature during this period is around 18°C.
How cold does it get in Haarlem?
The coldest month in Haarlem is January, with average low temperatures of 4°C. The average temperature during this period is around 5°C.
What is the wettest time of year in Haarlem?
The wettest month in Haarlem is October, with an average of 105mm of precipitation.
What is the driest time of year in Haarlem?
The driest month in Haarlem is May, with an average of 53mm of precipitation.
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