Measurements:
°C
°F
CURRENT WEATHER
01:44
Rotterdam
62°F
SW 9 mph
Feels like: 62°F
Precip: 60%
World Resorts Netherlands Rotterdam Weather

7 Day Weather Forecast

09.29
tue
DAY
72°F
NW 7 mph
precip
14%
NIGHT
68°F
NW 7 mph
precip
9%
09.30
wed
DAY
78°F
N 9 mph
precip
11%
NIGHT
66°F
NE 5 mph
precip
54%
10.01
thu
DAY
64°F
SE 6 mph
precip
38%
NIGHT
58°F
NE 4 mph
precip
14%
10.02
fri
DAY
66°F
NW 5 mph
precip
15%
NIGHT
58°F
SW 4 mph
precip
7%
10.03
sat
DAY
66°F
W 5 mph
precip
3%
NIGHT
56°F
SW 4 mph
precip
25%
10.04
sun
DAY
62°F
S 2 mph
precip
27%
NIGHT
60°F
S 6 mph
precip
84%
10.05
mon
DAY
64°F
SW 5 mph
precip
9%
NIGHT
56°F
S 5 mph
precip
14%

Rotterdam Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Rotterdam was 19.1°F. The maximum and minimum values were 18.0°F and 20.1°F respectively.

Rotterdam on the Weather Map

Best Time to Visit Rotterdam
The most sunny months:
August 12 days
June 11 days
April 11 days
The most warm months:
August 74.2 °F
July 73.6 °F
June 70.6 °F
Warmest sea temperature:
August 69.1 °F
July 67.2 °F
September 66.5 °F
The most cold months:
January 42.0 °F
February 43.9 °F
December 45.3 °F
The most rainy months:
August 4 days
December 4 days
October 4 days
The most windy months:
December 12 mph
February 12 mph
January 12 mph
more details