Current Sea Water Temperature:
+44.4°F
| Maximum Sea Water Temperature in December: | 50.8°F |
| Minimum Sea Water Temperature in December: | 41.0°F |
| Average water temperature in December: | 45.6°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| December 22 | 44.4°F | December 17 | 44.8°F |
| December 21 | 45.2°F | December 16 | 45.0°F |
| December 20 | 45.0°F | December 15 | 45.2°F |
| December 19 | 44.6°F | December 14 | 45.0°F |
| December 18 | 45.0°F | December 13 | 45.8°F |
When is the Warmest Sea for Portsmouth?
According to our data for the last three years for Portsmouth the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2024 for Portsmouth was 65.9°F. The maximum and minimum values were 63.2°F and 68.4°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2024 for Portsmouth was 62.3°F. The maximum and minimum values were 57.8°F and 66.4°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2024 for Portsmouth was 62.4°F. The maximum and minimum values were 59.6°F and 66.6°F respectively.
USA Resorts:
NAME
F°
| Boston |  |
+10 |
| Chicago |  |
+20 |
| Hawaii | |
+78 |
| Honolulu | |
+78 |
| Houston | |
+46 |
| Las Vegas | |
+50 |
| Los Angeles | |
+54 |
| Miami | |
+62 |
| New York | |
+16 |
| Orlando | |
+50 |
| San Diego | |
+54 |
| San Francisco | |
+54 |
| Sarasota | |
+48 |
| Tampa | |
+46 |
| Washington |  |
+20 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Portsmouth
Local time: 05:54
22 dec, sunday
| 0600 |  |
8°F | SE 12 mph |
| 0900 |  |
8°F | SE 10 mph |
| 1200 | |
16°F | SE 8 mph |
| 1500 | |
20°F | SE 8 mph |
| 1800 | |
20°F | SE 6 mph |
| 2100 | |
14°F | SE 6 mph |
23 dec, monday
| 0000 | |
10°F | SE 5 mph |
| 0300 | |
10°F | SE 4 mph |