Current Sea Water Temperature:
+87.4°F
| Maximum Sea Water Temperature in September: | 90.6°F |
| Minimum Sea Water Temperature in September: | 85.4°F |
| Average water temperature in September: | 87.9°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| September 28 | 87.4°F | September 23 | 87.0°F |
| September 27 | 87.8°F | September 22 | 87.0°F |
| September 26 | 87.2°F | September 21 | 87.4°F |
| September 25 | 87.2°F | September 20 | 87.2°F |
| September 24 | 87.0°F | September 19 | 86.8°F |
When is the Warmest Sea for Willemstad?
According to our data for the last three years for Willemstad the highest average sea water temperature was in October, September and November.
Average Water Temperature by Month, °F
Sea Water Temperature in October
The average sea surface temperature in October 2025 for Willemstad was 89.3°F. The maximum and minimum values were 88.0°F and 90.2°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2026 for Willemstad was 87.1°F. The maximum and minimum values were 86.4°F and 87.8°F respectively.
Sea Water Temperature in November
The average sea surface temperature in November 2025 for Willemstad was 87.1°F. The maximum and minimum values were 85.6°F and 88.4°F respectively.
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Willemstad
Local time: 17:18
28 sep, monday
| 1800 |  |
86°F | W 12 mph |
| 2100 | |
80°F | W 6 mph |
29 sep, tuesday
| 0000 |  |
78°F | NW 1 mph |
| 0300 | |
78°F | NE 1 mph |
| 0600 | |
76°F | N 2 mph |
| 0900 | |
86°F | NW 7 mph |
| 1200 | |
100°F | W 9 mph |
| 1500 | |
98°F | SW 15 mph |