Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
In September, the average high-temperature slightly decreases from a pleasant 21.6°C (70.9°F) in August to a comfortable 18.2°C (64.8°F). In September, the average low-temperature is 12.5°C (54.5°F).Humidity
In September, the average relative humidity in Amsterdam is 80%.Rainfall
In Amsterdam, during September, the rain falls for 15.7 days and regularly aggregates up to 45mm (1.77") of precipitation. In Amsterdam, during the entire year, the rain falls for 189.3 days and collects up to 510mm (20.08") of precipitation.Snowfall
April through October are months without snowfall in Amsterdam, Netherlands.Sea temperature
In Amsterdam, the average seawater temperature in September is 18.1°C (64.6°F).Note: For most, swimming in 18.1°C (64.6°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
The average length of the day in September in Amsterdam, Netherlands, is 12h and 40min.On the first day of the month, sunrise is at 06:51 and sunset at 20:29. On the last day of September, in Amsterdam, sunrise is at 07:39 and sunset at 19:21 CEST.
Sunshine
In September, the average sunshine is 7.1h.UV index
The average daily maximum UV index in September in Amsterdam is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
FAQ
What is the temperature in September in Amsterdam?
What is the average humidity in September in Amsterdam?
How many days does it rain in September in Amsterdam?
When it does not snow in Amsterdam?
How cold is the water in September in Amsterdam?
How many hours of daylight does Amsterdam have in September?
When are sunrise and sunset in September in Amsterdam?
How long on average sun shines in September in Amsterdam?
What is the UV index intensity in September in Amsterdam?
Average temperature in September
Amsterdam, Netherlands
- Average high temperature in September: 18.2°C
The warmest month (with the highest average high temperature) is August (21.6°C).
The month with the lowest average high temperature is January (5.3°C).
- Average low temperature in September: 12.5°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is February (2°C).
Average pressure in September
Amsterdam, Netherlands
- Average pressure in September: 1016.8mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1011.2mbar).
Average wind speed in September
Amsterdam, Netherlands
- Average wind speed in September: 14km/h
The windiest month (with the highest average wind speed) is December (20.4km/h).
The calmest months (with the lowest average wind speed) are July and August (13.2km/h).
Average humidity in September
Amsterdam, Netherlands
- Average humidity in September: 80%
The month with the highest relative humidity is December (86%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Amsterdam, Netherlands
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is August (55mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Amsterdam, Netherlands
- Average rainfall days in September: 15.7 days
The month with the highest number of rainy days is August (18.8 days).
The month with the least rainy days is April (12.2 days).
Average snowfall in September
Amsterdam, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (22mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Amsterdam, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Amsterdam, Netherlands
- Average sea temperature in September: 18.1°C
The best month for swimming (with the highest average sea temperature) is August (18.3°C).
The coldest months (with the lowest average sea temperature) are January and February (6.4°C).
Average daylight in September /
Average sunshine in September
Amsterdam, Netherlands
- Average daylight in September: 12h and 4min
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 1min
The months with the most sunshine are June and July (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in September
Amsterdam, Netherlands
- Average sunshine days in September: 11.1 days
The month with the most sunshine days is March (15.1 days).
The month with the least sunshine days is December (8 days).
Average UV index in September
Amsterdam, Netherlands
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Amsterdam, Netherlands
- Average cloud cover in September: 45
The month with the most cloud cover is December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Amsterdam, Netherlands
- Average visibility in September: 9km
The months with the highest visibility are April, June and August (10km).
The months with the lowest visibility are January, February, March, May, July, September, October, November and December (9km).
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