Fanø Weather in September
September in Fanø brings moderate temperatures, with daytime highs of 18°C (64°F) and nights around 13°C (55°F). Quite a bit of rainfall is expected, around 107 mm (4.2 in), so pack an umbrella.
Rainfall in Fanø in September
Historically, September sees about 16 days of rain, with a monthly average of 107 mm (4.2 in). Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Fanø in September
Daytime highs in Fanø in September reach 18°C (64°F), with nights around 13°C (55°F). During September, the summer season is in full swing. The difference between afternoon and evening temperatures is usually noticeable. With lows of 13°C (55°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 Fanø in September
The area experiences a moderate amount of sunshine, with approximately 166 hours of sunlight expected. This means a decent mix of sun and overcast.
Wind Speed in Fanø in September
September sees wind speeds averaging 6 m/s (12 knots). You'll experience strong winds that cause whole trees to sway and require effort when walking against them. As an average, expect variation from moderate breezes to particularly windy days that affect daily routines.
Average water temperature in September
The water temperature is 15°C (59°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.If you prefer dry days with pleasant temperatures, July typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Denmark, check out our Fanø's climate page.
Fanø Temperature in September
Min Temperature
13°C (55°F)
Max Temperature
18°C (64°F)
Water Temperature
15°C (59°F) *
Chance of Rain
54%
Precipitation
107 mm (4.2 in)
Rainy days
16 days
Humidity
83% *
Windspeed
6 m/s (12 knots) *
Sunshine
166 hours *
Percentage Sunshine
43% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Fanø typically drop from around 18°C (64°F) at the start of September to approximately 15°C (59°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 11°C (52°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 for Fanø in September
Browse day-by-day weather records for Fanø spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Fanø historical weather extremes in September
Based on weather observations in Fanø between 1976 and 2025, these are the recorded extremes during September.
- On September 13, 2016, temperatures climbed to 29°C (84°F), marking the warmest September day on record.
- Fanø experienced its chilliest September day on September 29, 1995, reaching only 9°C (48°F).
- Nighttime temperatures dropped to -1°C (30°F) on September 29, 1987, marking the coldest September night on record.
Best Places in Denmark in September
Find out more about the weather in Denmark and which places have the best travel conditions in this month. See all of Denmark in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Fanø in September
For Fanø in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. The water temperature sits at about 15°C (59°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Fanø in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Denmark, check out our Fanø's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Fanø climate overview or explore weather in Denmark.
