September weather forecast and climate
Amsterdam, Netherlands

Bicycles parked on a bridge on river Amstel in Amsterdam, Netherlands
Bicycles parked on a bridge on river Amstel in Amsterdam, Netherlands

Weather in September

September, the first month of the autumn, in Amsterdam, is still a comfortable month, with temperature in the range of an average high of 18.2°C (64.8°F) and an average low of 12.5°C (54.5°F).

Temperature

In Amsterdam, the average high-temperature marginally drops, from a pleasant 21.6°C (70.9°F) in August, to a comfortable 18.2°C (64.8°F). In Amsterdam, the average low-temperature is 12.5°C (54.5°F).

Humidity

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

In Amsterdam snow does not fall in April through October.

Sea temperature

In September, the average sea temperature in Amsterdam is 18.1°C (64.6°F).
Note: Swimming in 18.1°C (64.6°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

In September, the average length of the day is 12.6h.

Sunshine

The average sunshine in Amsterdam is 7.1h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
[Resources]

FAQ

What is the average humidity in September in Amsterdam?

In Amsterdam, the average relative humidity in September is 80%.

How much does it rain in Amsterdam in September?

In Amsterdam, Netherlands, during September, the rain falls for 15.7 days and regularly aggregates up to 45mm (1.77") of precipitation.

When it does not snow in Amsterdam?

April through October are months without snowfall.

How cold is the water in September in Amsterdam?

In Amsterdam, Netherlands, in September, the average water temperature is 18.1°C (64.6°F). For swimming, a surface water temperature of 18.1°C (64.6°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Amsterdam have in September?

The average length of the day in September is 12.6h.

How many hours of sunshine does Amsterdam have in September?

The average sunshine in September in Amsterdam is 7.1h.

How high is the UV index in September in Amsterdam?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV rays.

Average temperature in September
Amsterdam, Netherlands

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).

[Resources]

Average pressure in September
Amsterdam, Netherlands

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).

[Resources]

Average wind speed in September
Amsterdam, Netherlands

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).

[Resources]

Average humidity in September
Amsterdam, Netherlands

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%).

[Resources]

Average rainfall in September
Amsterdam, Netherlands

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).

[Resources]

Average rainfall days in September
Amsterdam, Netherlands

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).

[Resources]

Average snowfall in September
Amsterdam, Netherlands

Average snowfall in September - Amsterdam, Netherlands
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (22mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

[Resources]

Average snowfall days in September
Amsterdam, Netherlands

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).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average sea temperature in September
Amsterdam, Netherlands

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).

[Resources]

Average daylight in September /
Average sunshine in September
Amsterdam, Netherlands

Average daylight in September / Average sunshine in September - Amsterdam, Netherlands
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.7h).
The month with the shortest days is December (Average daylight: 7.8h).

  • Average sunshine in September: 7.1h

Months with the most sunshine are June and July (Average sunshine: 9.7h).
The month with the least sunshine is December (Average sunshine: 3.5h).

[Resources]

Average sunshine days in September
Amsterdam, Netherlands

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).

[Resources]

Average UV index in September
Amsterdam, Netherlands

Average UV index in September - Amsterdam, Netherlands
  • Average UV index in September: 4

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 2).

[Resources]

Average cloud cover in September
Amsterdam, Netherlands

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).

[Resources]

Average visibility in September
Amsterdam, Netherlands

Average visibility in September - Amsterdam, Netherlands
  • Average visibility in September: 9km

Months with the highest visibility are April, June and August (10km).
Months with the lowest visibility are January, February, March, May, July, September, October, November and December (9km).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location