worldweather18°Cnear normal
usually 17°C–20°C
night: warmer than usual
rain: less rain than usual
wind: typical
Weather in Haarlem - 14-day forecast
Detailed weather forecast for Haarlem, Netherlands: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Haarlem
today🌧️
18°💧 0.1 mm
Sun☁️
21°💧 0.1 mm
Mon☁️
24°💧 0.1 mm
Tue🌧️
17°💧 3.2 mm
Wed🌧️
16°💧 5.1 mm
Thu🌧️
16°💧 5.5 mm
Fri🌧️
18°💧 4.1 mm
Sat🌧️
18°💧 4.7 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Monday 7 Sept in Haarlem, the forecast high is 24°C. Typical daytime temperatures at this time of year range from 17°C to 20°C, so it will be exceptionally warm. It is warmer than 97% of similar days.
21°Cexceptionally warm
usually 17°C–20°C
warmer than 90% of similar days
night: warmer than usual
rain: less rain than usual
wind: exceptionally light
24°Cexceptionally warm
usually 17°C–20°C
warmer than 97% of similar days
night: exceptionally warm
rain: less rain than usual
wind: typical
17°Cnear normal
usually 17°C–20°C
night: warmer than usual
rain: more rain than usual
wind: typical
16°Cexceptionally cool
usually 16°C–20°C
cooler than 90% of similar days
night: warmer than usual
rain: more rain than usual
wind: typical
16°Ccooler than usual
usually 16°C–20°C
cooler than 77% of similar days
night: exceptionally warm
rain: more rain than usual
wind: typical
18°Cnear normal
usually 16°C–20°C
night: warmer than usual
rain: more rain than usual
wind: typical
How warm was this week in previous years?
Each bar shows the average daily high during the same 7-day period in each year.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 18°C by day. The coolest year was 1986 (14°C) and the warmest was 2023 (25°C). The current forecast averages 19°C - higher than in 64% of historical years.
Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.
Weather warnings - Haarlem
No active weather warnings for Haarlem (region: Noord-Holland). The national weather service is not forecasting dangerous conditions.
14-day forecast - Haarlem
Haarlem 30 & 45-day weather - long-range outlook
Next 16 days · forecast
20°
around 18° at night · days with rain: 9
Weeks 3-4 · avg for September
19°
around 11° at night · rain chance 59%
Weeks 5-7 · avg for October
15°
around 8° at night · rain chance 65%
The 30 & 45-day outlook for Haarlem: the next 16 days are a numerical forecast updated daily - on average 20° by day and 18° at night. Further out we rely on multi-year climate averages: around 19° in September, and about 15° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for Haarlem
Saturday5 September 2026
🌧️18°light rain
Sunday6 September 2026
☁️21°broken clouds
Monday7 September 2026
☁️24°broken clouds
Tuesday8 September 2026
🌧️17°light rain
Wednesday9 September 2026
🌧️16°light rain
Thursday10 September 2026
🌧️16°light rain
Friday11 September 2026
🌧️18°light rain
Saturday12 September 2026
🌧️18°light rain
Sunday13 September 2026
🌤️18°scattered clouds
Monday14 September 2026
☁️18°broken clouds
Tuesday15 September 2026
☁️21°broken clouds
Wednesday16 September 2026
🌧️19°light rain
Thursday17 September 2026
🌧️18°light rain
Friday18 September 2026
🌤️22°scattered clouds
Saturday19 September 2026
☀️27°clear sky
Sunday20 September 2026
☁️27°overcast clouds
UV index in Haarlem - is it safe to sunbathe?
Today the UV index in Haarlem is 3 (moderate) - unprotected fair skin can burn in about 65 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.
Pollen in Haarlem - info for allergy sufferers
Today grasses pollen is highest in Haarlem - about 2 grains/m³, low level. Most allergy sufferers should not feel strong symptoms. Pollen levels are a CAMS model forecast and are indicative.
Sea temperature - Haarlem
Water today
20°C
Week avg
20°C
Waves today
2.5 m
How's the water?
brisk
16-day sea temperature forecast:
Average sea temperature through the year:
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.
Air quality and smog in Haarlem
Air quality in Haarlem is currently very good. Fine particulate PM2.5: 3.9 µg/m³, PM10: 12.1 µg/m³.
| City | PM2.5 (µg/m³) | PM10 (µg/m³) | Air quality |
|---|---|---|---|
| Haarlem | 3.9 | 12.1 | very good |
Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-05, 03:00).
Haarlem weather through the year
Warmest, driest months on average: May, June, July, August.
Upcoming public holidays in Netherlands: Christmas Day — 25 December · St. Stephen's Day — 26 December · New Year's Day — 1 January.
Nearby and related places
FAQ - Haarlem weather
What is the weather like in Haarlem today?
Today it is about 18° during the day and 17° at night, light rain.
How far ahead can I check the forecast for Haarlem?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.