World Resorts Netherlands Rotterdam Weather

Rotterdam sea water temperature

Current sea water temperature:
+46.2°F
Minimum sea water temperature in March: 48.4°F
Maximum sea water temperature in March: 37.8°F
Average sea water temperature in March: 43.6°F

Sea water temperature for the last 10 days:

March 17 46.2°F March 12 45.1°F
March 16 46.2°F March 11 45.9°F
March 15 45.7°F March 10 45.0°F
March 14 44.8°F March 9 44.8°F
March 13 44.6°F March 8 44.8°F

When is the warmest sea in Rotterdam?

Based on the data about daily sea water temperature for the last three years the warmest sea in Rotterdam was noticed in August, July and September.

Monthly Sea Temperatures in Rotterdam, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 67.9°F. The highest and lowest sea temperatures during the month were 68.9°F and 66.9°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 67.1°F. The highest and lowest sea temperatures during the month were 68.5°F and 65.7°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 64.5°F. The highest and lowest sea temperatures during the month were 67.3°F and 60.6°F.

Best time for vacation in Rotterdam

Sunniest months:
June 12 days
August 12 days
April 11 days
Warmest months:
August 71.5 °F
July 70.9 °F
June 68.3 °F
Warmest sea temp:
August 67.1 °F
July 65.3 °F
September 64.8 °F
Coldest months:
January 42.8 °F
February 44.5 °F
December 45.8 °F
Rainiest months:
August 4 days
December 4 days
October 4 days
Windiest months:
December 12.8 mph
February 12.4 mph
January 12.1 mph

Rotterdam on a weather map

Rotterdam
+50°F
NE 10 mph
Feels like: +45°F
Precip.: 0%
Places in Netherlands:
Name
°F
+48°F
+79°F
+48°F
+48°F
+45°F
+46°F
+50°F
+46°F
+46°F
24 Hours Forecast
Rotterdam
Local time: 09:36
March 17, tuesday
1200
55°F
NE
9 mph
1500
59°F
NE
8 mph
1800
57°F
NE
4 mph
2100
52°F
NW
6 mph
March 18, wednesday
0000
48°F
NW
6 mph
0300
46°F
NW
7 mph
0600
45°F
W
8 mph
0900
48°F
NW
11 mph
Units of measurement: °C / °F