Portland in January
Find out everything about the water temperature in Portland in January. Average, minimum and maximum recorded temperatures as well as daily temperature in January for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in January
Minimum:
46.8 °F
Average:
49.5 °F
Maximum:
52.7 °F
Sea water temperature in Portland in January
In the city of Portland, the month of January is too cold for swimming. The minimum recorded temperature during this month was 46.8°F on January 29, 2021, with an average temperature being 49.5°F and a maximum temperature reaching 52.7°F on January 1, 2016.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Jan 1 | 50.8°F | 52.1°F | 49.9°F |
| Jan 2 | 50.9°F | 51.8°F | 50.1°F |
| Jan 3 | 50.8°F | 52.3°F | 50.1°F |
| Jan 4 | 50.9°F | 51.8°F | 50.1°F |
| Jan 5 | 50.7°F | 51.6°F | 50.3°F |
| Jan 6 | 50.6°F | 51.4°F | 51.0°F |
| Jan 7 | 50.4°F | 51.2°F | 50.5°F |
| Jan 8 | 50.5°F | 51.0°F | 50.8°F |
| Jan 9 | 50.2°F | 50.2°F | 50.5°F |
| Jan 10 | 50.2°F | 50.0°F | 50.5°F |
| Jan 11 | 50.0°F | 49.9°F | 50.5°F |
| Jan 12 | 49.9°F | 49.6°F | 50.3°F |
| Jan 13 | 49.9°F | 49.5°F | 50.4°F |
| Jan 14 | 49.8°F | 49.2°F | 50.6°F |
| Jan 15 | 49.7°F | 49.3°F | 50.3°F |
| Jan 16 | 49.5°F | 48.5°F | 50.1°F |
| Jan 17 | 49.4°F | 48.5°F | 50.0°F |
| Jan 18 | 49.3°F | 48.3°F | 49.6°F |
| Jan 19 | 49.2°F | 47.8°F | 49.5°F |
| Jan 20 | 49.2°F | 47.6°F | 49.3°F |
| Jan 21 | 49.0°F | 47.7°F | 49.1°F |
| Jan 22 | 48.8°F | 47.3°F | 48.9°F |
| Jan 23 | 48.8°F | 47.6°F | 49.0°F |
| Jan 24 | 48.7°F | 47.2°F | 49.0°F |
| Jan 25 | 48.5°F | 47.0°F | 48.8°F |
| Jan 26 | 48.6°F | 48.0°F | 48.5°F |
| Jan 27 | 48.5°F | 48.1°F | 48.2°F |
| Jan 28 | 48.5°F | 48.0°F | 48.3°F |
| Jan 29 | 48.2°F | 47.4°F | 48.2°F |
| Jan 30 | 48.1°F | 47.5°F | 47.4°F |
| Jan 31 | 48.3°F | 48.3°F | 48.1°F |
In an average year, Portland offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Portland was recorded on September 3, 2022, reaching a 67.0°F. While the coldest temperature occurred on March 5, 2018, dipping to 43.9°F. The average readings by season are 49.8°F in Winter, 50.1°F in Spring, 61.3°F in Summer, and 60.3°F in Autumn.
January's average temperature is a slight drop from December's average of 52.1°F. In February, the temperature is expected to decrease further, potentially averaging around 47.7°F.
Popular neighboring cities and resorts
| City | Water temperature* | Distance** |
|---|---|---|
| Bristol |
51.7°F
|
62mi |
| Barry |
53.0°F
|
68mi |
| Cardiff |
52.3°F
|
71mi |
| Cherbourg-Octeville |
56.9°F
|
74mi |
* current water temperature in this city
** straight line distance from Portland