Marshall Islands: where to swim in January?
Marshall Islands, in January: the sea is at 28.8 °C on average along the coast, from 28.6 °C to 28.9 °C depending on the spot. Where the water is warmest (28.9 °C), it is very warm. Almost lukewarm: you can get in without any cold shock.
Sea temperature, month by month
| Month | Average temperature | Depending on the spot | Where it is warmest |
|---|---|---|---|
| January | 28.8 °C | 28.6 °C – 28.9 °C | very warm |
| February | 28.5 °C | 28.3 °C – 28.7 °C | very warm |
| March | 28.7 °C | 28.5 °C – 28.9 °C | very warm |
| April | 28.7 °C | 28.5 °C – 28.9 °C | very warm |
| May | 29.0 °C | 28.8 °C – 29.2 °C | very warm |
| June | 29.0 °C | 28.9 °C – 29.2 °C | very warm |
| July | 29.1 °C | 29.0 °C – 29.3 °C | very warm |
| August | 29.6 °C | 29.5 °C – 29.8 °C | very warm |
| September | 29.7 °C | 29.5 °C – 29.9 °C | very warm |
| October | 29.7 °C | 29.6 °C – 29.8 °C | very warm |
| November | 29.5 °C | 29.4 °C – 29.6 °C | very warm |
| December | 29.0 °C | 28.9 °C – 29.2 °C | very warm |
Compared with December, the water hardly changes in January. The warmest month: September (29.7 °C). The coldest: February (28.5 °C).
Nearby, in January
- Federated States of Micronesia 29.0 °C · very warm
- American Samoa 29.2 °C · very warm
- Palau 29.0 °C · very warm
- Australia 24.5 °C · very warm
- South Korea 12.3 °C · cool
- Taiwan 22.2 °C · warm
- People's Republic of China 12.1 °C · pleasant
- Canada -0.8 °C · very cold
- Mexico 22.6 °C · very warm
- United States 14.4 °C · pleasant
And right now?
For the temperature measured right now, station by station and to the hour: Marshall Islands: water temperature
Frequently asked questions
What is the sea temperature in January?
Marshall Islands, in January: 28.8 °C on average along the coast, from 28.6 °C in the coolest waters to 28.9 °C in the warmest (average of the years 2011 to 2025).
Can you swim in January?
Where the water is warmest (28.9 °C), it is very warm. Almost lukewarm: you can get in without any cold shock.
What is the best month for swimming?
The water is warmest in September (29.7 °C on average) and coldest in February (28.5 °C). Where the water is warmest, it goes above 20 °C in these months: January, February, March, April, May, June, July, August, September, October, November, December.
Where is the water warmest in January?
The warmest in January: Federated States of Micronesia (29.0 °C), American Samoa (29.2 °C), Palau (29.0 °C). The coolest: United States (14.4 °C).
Where do these temperatures come from?
These are averages of the sea surface temperature from 2011 to 2025, computed from NOAA satellite images (OISST, one value about every 50 km), in a 100 km strip along the coasts of the main country: distant territories (overseas, remote islands) are not counted. It is an estimate, not a measurement taken at the beach: lakes and rivers are not included.