Hollum Weather in September
During September, Hollum experiences pleasant daytime temperatures of 18°C (64°F) and cooler nights around 14°C (57°F). As part of the summer season, expect quite a bit of rainfall. Around 105 mm (4.1 in) is typical.
Rainfall in Hollum in September
Historically, approximately 17 days this month are expected to have rain, averaging 105 mm (4.1 in). Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Hollum in September
Temperatures in Hollum in September top out at 18°C (64°F) and drop to 14°C (57°F) overnight. September is known for being in the summer season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 14°C (57°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Hollum in September
You can expect a moderate amount of sunlight, with approximately 154 hours. This means a pleasant mix of sun and overcast.Should you favor a climate that's both dry and comfortably warm, July typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Hollum Temperature in September
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Hollum Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Hollum - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Hollum typically stay consistent throughout September, with daily highs averaging around 18°C (64°F). Nights are cool, with lows typically ranging from 10°C (50°F) to 13°C (55°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 Hollum in September
Browse day-by-day weather records for Hollum spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Hollum historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Hollum.
- The warmest day in September was on September 13, 1999, with a maximum of 30°C (86°F).
- The lowest daytime temperature in September was 11°C (52°F), recorded on September 28, 1995.
- The coldest night in September in Hollum was on September 13, 1986, with a minimum of 3°C (37°F).
- The heaviest September precipitation occurred on September 30, 1993, when 46 mm (1.8 in) of precipitation fell.
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 Hollum 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. Expect heavy rainfall, so bring good rain protection and waterproof bags. Sunglasses could come in handy during the sunnier parts of your trip.
What To Do in Hollum in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling9/10 -
Walking9/10 -
Camping6/10 -
Outdoor sports9/10
Hollum 3-Day Forecast
Temperature Rainfall Sunshine Humidity
See the full Hollum 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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