Weather in Amsterdam in September

Daylight on the 15th: 12 h 41 min
Average high: 19 °C (65 °F)
Average low: 12 °C (54 °F)
Precipitation: 67 mm

In September, the area around Amsterdam averages daytime highs of 19 °C (65 °F) and night-time lows of 12 °C (54 °F). Days are mild; a light jacket covers most of it.

Temperature

Compared with August, September is cooler by 3 °C in daytime highs, and October is cooler by 4 °C than September. The daily average is 15 °C (60 °F).

Precipitation, humidity and wind

Precipitation averages about 67 mm over the month, with 12 days of at least 1 mm. Expect some wet days, but not every day.

Relative humidity averages 81 % and wind at 2 m about 3.6 m/s.

Daylight

On 15 September the sun rises at 07:15 and sets at 19:56 local time, for 12 h 41 min of daylight, 121 minutes less than a month earlier.

About these numbers

The figures are 2011-2020 averages for the grid cell around Amsterdam from the NASA POWER project, a model based data set. They describe the area rather than one weather station, and a single year can differ.

Month by month

Month	High	Low	Precipitation
January	6 °C	2 °C	74 mm
February	6 °C	1 °C	58 mm
March	9 °C	3 °C	47 mm
April	13 °C	6 °C	38 mm
May	16 °C	9 °C	52 mm
June	19 °C	13 °C	72 mm
July	21 °C	15 °C	76 mm
August	21 °C	15 °C	78 mm
September	19 °C	12 °C	67 mm
October	15 °C	9 °C	83 mm
November	10 °C	6 °C	66 mm
December	7 °C	4 °C	86 mm

Questions

How warm is Amsterdam in September?

Average highs of 19 °C (65 °F) and lows of 12 °C (54 °F) (2011-2020 averages).

Does it rain a lot in Amsterdam in September?

About 67 mm over the month, on 12 days with at least 1 mm.

Sources

NASA Langley Research Center POWER Project, funded through the NASA Earth Science Directorate Applied Science Program (2026-09-22)
Computed from the city coordinates with the NOAA solar position equations
IANA tz database
Wikidata, CC0 (2026-09-22)