September weather forecastOtterlo, Netherlands
September
Weather in September
September, the first month of the autumn in Otterlo, is still a comfortable month, with an average temperature varying between 10.7°C (51.3°F) and 18.7°C (65.7°F).Temperature
A minor decrease in the average high-temperature is observed during September, shifting from a pleasant 22.3°C (72.1°F) in August to a refreshing 18.7°C (65.7°F). Throughout the month of September, Otterlo reports a steady low-temperature average of 10.7°C (51.3°F).Humidity
In Otterlo, the average relative humidity in September is 82%.Rainfall
In Otterlo, in September, during 14.7 rainfall days, 33mm (1.3") of precipitation is typically accumulated. Throughout the year, in Otterlo, there are 198.4 rainfall days, and 536mm (21.1") of precipitation is accumulated.Snowfall
In Otterlo, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 39min.On the first day of September, sunrise is at 06:49 and sunset at 20:24. On the last day of the month, sunrise is at 07:37 and sunset at 19:16 CEST.
Sunshine
The average sunshine in September in Otterlo is 7.2h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Otterlo, Netherlands
- Average high temperature in September: 18.7°C
The warmest month (with the highest average high temperature) is August (22.3°C).
The month with the lowest average high temperature is January (4.6°C).
- Average low temperature in September: 10.7°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (0.8°C).
Average pressure in September
Otterlo, Netherlands
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is September (1017.1mbar).
The month with the lowest atmospheric pressure is November (1011.9mbar).
Average wind speed in September
Otterlo, Netherlands
- Average wind speed in September: 11.9km/h
The windiest month (with the highest average wind speed) is December (17.7km/h).
The calmest months (with the lowest average wind speed) are July and August (11.7km/h).
Average humidity in September
Otterlo, Netherlands
- Average humidity in September: 82%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Otterlo, Netherlands
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is June (55mm).
The driest month (with the least rainfall) is April (28mm).
Average rainfall days in September
Otterlo, Netherlands
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is July (19.9 days).
The month with the least rainy days is February (14.5 days).
Average snowfall in September
Otterlo, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is January (36mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Otterlo, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Otterlo, Netherlands
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 7h and 12min
The month with the most sunshine is July (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Otterlo, Netherlands
- Average sunshine days in September: 12.2 days
The month with the most sunshine days is April (13.1 days).
The month with the least sunshine days is December (7.3 days).
Average UV index in September
Otterlo, Netherlands
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Otterlo, Netherlands
- Average cloud cover in September: 47
The month with the most cloud cover is December (Cloud cover 67).
The months with the least cloud cover are April and August (Cloud cover 43).
Average visibility in September
Otterlo, Netherlands
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, May, June, July, August, October and November (9km).
The months with the lowest visibility are January, September and December (8km).
