West Haven in December
Find out everything about the water temperature in West Haven in December. Average, minimum and maximum recorded temperatures as well as daily temperature in December for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in December
Minimum:
39.1 °F
Average:
45.8 °F
Maximum:
52.2 °F
Sea water temperature in West Haven in December
In the city of West Haven, the month of December is too cold for swimming. The minimum recorded temperature during this month was 39.1°F on December 28, 2025, with an average temperature being 45.8°F and a maximum temperature reaching 52.2°F on December 2, 2017.
| Date | 10 years average | 2025 | 2024 |
|---|---|---|---|
| Dec 1 | 49.9°F | 48.8°F | 49.7°F |
| Dec 2 | 50.0°F | 48.3°F | 49.8°F |
| Dec 3 | 49.8°F | 48.3°F | 49.5°F |
| Dec 4 | 49.4°F | 47.7°F | 49.5°F |
| Dec 5 | 48.9°F | 47.0°F | 49.4°F |
| Dec 6 | 48.5°F | 47.2°F | 49.1°F |
| Dec 7 | 48.3°F | 46.4°F | 48.5°F |
| Dec 8 | 48.1°F | 46.4°F | 48.2°F |
| Dec 9 | 47.9°F | 46.4°F | 47.9°F |
| Dec 10 | 47.6°F | 46.4°F | 46.7°F |
| Dec 11 | 47.2°F | 46.3°F | 46.6°F |
| Dec 12 | 46.9°F | 44.3°F | 46.5°F |
| Dec 13 | 46.4°F | 43.2°F | 46.1°F |
| Dec 14 | 46.0°F | 43.5°F | 45.5°F |
| Dec 15 | 45.8°F | 42.2°F | 45.4°F |
| Dec 16 | 45.7°F | 42.9°F | 45.5°F |
| Dec 17 | 45.3°F | 42.9°F | 45.2°F |
| Dec 18 | 45.1°F | 42.4°F | 44.6°F |
| Dec 19 | 44.7°F | 42.0°F | 43.8°F |
| Dec 20 | 44.2°F | 42.2°F | 44.3°F |
| Dec 21 | 44.2°F | 40.9°F | 44.2°F |
| Dec 22 | 44.0°F | 41.2°F | 43.8°F |
| Dec 23 | 43.7°F | 41.2°F | 42.5°F |
| Dec 24 | 43.4°F | 41.4°F | 43.0°F |
| Dec 25 | 43.1°F | 40.5°F | 42.1°F |
| Dec 26 | 43.0°F | 41.2°F | 42.6°F |
| Dec 27 | 42.5°F | 40.9°F | 40.3°F |
| Dec 28 | 42.5°F | 39.1°F | 41.3°F |
| Dec 29 | 42.4°F | 39.1°F | 41.5°F |
| Dec 30 | 42.4°F | 39.6°F | 42.3°F |
| Dec 31 | 42.2°F | 39.3°F | 41.6°F |
In West Haven, August is the only month that offers comfortable swimming conditions. The amount of days when the water is warm enough is only 49.
The warmest water in West Haven was recorded on August 14, 2020, reaching a 78.6°F. While the coldest temperature occurred on February 23, 2025, dipping to 33.1°F. The average readings by season are 40.9°F in Winter, 46.3°F in Spring, 70.4°F in Summer, and 64.0°F in Autumn.
December's average temperature is a slight drop from November's average of 55.4°F. In January, the temperature is expected to decrease further, potentially averaging around 39.9°F.