Kwajalein weather by month & the best time to visit
Marshall Islands · beach resort · tropical rainforest climate
The best time to visit Kwajalein is February — its sunniest month (Sunshine Score 80/100), with January and March close behind. Kwajalein averages about 2,687 hours of sunshine a year. Daytime highs around 28°C / 82°F and roughly 79 mm of rain in February.
When is the best time to visit Kwajalein?
For sunshine, the best time to visit Kwajalein is February, then January and March. The dullest month is April (67/100, 149 mm of rain). The full month-by-month picture is in the table below.
How sunny is Kwajalein?
Kwajalein gets a lot of sun: around 2,687 hours a year. Conditions barely change through the year — only 13 Sunshine Score points separate February from April. It ranks #7 of 16 destinations in Marshall Islands for annual sunshine, above the national median of 2,673 hours. The year's 1,955 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 79 | 28° / 82°F | 28° / 82°F | 85 mm | 10 | 28° / 82°F |
| February | 80 | 28° / 82°F | 27° / 81°F | 79 mm | 12 | 28° / 82°F |
| March | 76 | 28° / 82°F | 27° / 81°F | 105 mm | 12 | 28° / 82°F |
| April | 67 | 28° / 82°F | 28° / 82°F | 149 mm | 12 | 29° / 84°F |
| May | 67 | 28° / 82°F | 28° / 82°F | 165 mm | 11 | 29° / 84°F |
| June | 67 | 29° / 84°F | 28° / 82°F | 149 mm | 11 | 29° / 84°F |
| July | 67 | 29° / 84°F | 28° / 82°F | 197 mm | 11 | 29° / 84°F |
| August | 67 | 28° / 82°F | 28° / 82°F | 192 mm | 12 | 30° / 86°F |
| September | 67 | 29° / 84°F | 28° / 82°F | 219 mm | 12 | 30° / 86°F |
| October | 67 | 29° / 84°F | 28° / 82°F | 250 mm | 11 | 30° / 86°F |
| November | 67 | 29° / 84°F | 28° / 82°F | 222 mm | 10 | 30° / 86°F |
| December | 69 | 29° / 84°F | 28° / 82°F | 143 mm | 9 | 29° / 84°F |
Sea temperature in Kwajalein by month
The sea off Kwajalein is warmest in August at around 30°C / 86°F, and coolest in January at 28°C / 82°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Kwajalein: questions and answers
What kind of destination is Kwajalein?
Kwajalein is a beach resort in Marshall Islands with a tropical rainforest climate — the sea reaches 30°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Kwajalein get a year?
Kwajalein gets about 2,687 hours of sunshine a year, at its best around February.
When is the best time to visit Kwajalein?
The sunniest time to visit Kwajalein is February, when the Sunshine Score peaks at 80/100 (with January and March close behind). Expect daytime highs around 28°C / 82°F.
What is the least sunny month in Kwajalein?
April is the least sunny month in Kwajalein, scoring 67/100 with about 149 mm of rain.
What is the sea temperature in Kwajalein?
The sea in Kwajalein ranges from about 28°C (January) to 30°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Kwajalein?
The typical midday UV index in Kwajalein peaks around 12 (extreme) in February, easing to about 9 (very high) in December. Month-by-month midday UV values are in the UV column of the table on this page.
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