Arnhem Weather in September
Arnhem in September sees pleasant daytime temperatures of 20°C (68°F) and nighttime lows of 11°C (52°F). Rainfall is fairly high this month at around 70 mm (2.8 in), so pack a rain jacket to stay dry.
Rainfall in Arnhem in September
Records from the past 30 years suggest around 15 days of rain, with 70 mm (2.8 in) average for the month. With rain spread across many days but low totals, showers are typically short and light rather than heavy.
Temperature in Arnhem in September
Weather in Arnhem is at its excellent in September. Highs reach 20°C (68°F), while nights settle around 11°C (52°F). The difference between afternoon and evening temperatures is usually noticeable. With lows of 11°C (52°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Arnhem in September
With about 135 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Arnhem.
Arnhem Temperature in September
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Arnhem Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Arnhem - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Arnhem typically drop from around 20°C (68°F) at the start of September to approximately 17°C (63°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 12°C (54°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Arnhem in September
Browse day-by-day weather records for Arnhem spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Arnhem historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Arnhem.
- Arnhem recorded its highest September temperature of 32°C (90°F) on September 15, 2020.
- Arnhem experienced its chilliest September day on September 22, 1996, reaching only 10°C (50°F).
- The coldest night in September in Arnhem was on September 23, 1979, with a minimum of 0°C (32°F).
- The wettest day in September Arnhem was on September 5, 2001 with 39 mm (1.5 in) of precipitation.
Best Places in the Netherlands in September
Find out more about the weather in the Netherlands and which places have the best travel conditions in this month. See all of the Netherlands in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Arnhem in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Arnhem in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling10/10 -
Walking10/10 -
Camping8/10 -
Outdoor sports10/10
Arnhem 3-Day Forecast
See the full Arnhem climate overview or explore weather in the Netherlands.
Popular in September
Where to go in September - average daytime high across popular destinations.
Valkenburg
20°C (68°F) Utrecht20°C (68°F) Maastricht20°C (68°F) Noordwijk aan Zee
19°C (66°F) Rotterdam20°C (68°F) Zandvoort
19°C (66°F) The Hague20°C (68°F) Amsterdam19°C (66°F) 
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