Manus Island weather by month & the best time to visit
Papua New Guinea · beach resort · tropical rainforest climate
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The best time to visit Manus Island is January — its sunniest month (Sunshine Score 64/100), with February and March close behind. Manus Island averages about 2,141 hours of sunshine a year. Daytime highs around 29°C / 84°F and roughly 268 mm of rain in January.
When is the best time to visit Manus Island?
For sunshine, the best time to visit Manus Island is January, then February and March. The dullest month is January (64/100, 268 mm of rain). The full month-by-month picture is in the table below.
How sunny is Manus Island?
Manus Island gets a moderate 2,141 hours of sunshine a year. Conditions barely change through the year — only 0 Sunshine Score points separate January from January. It ranks #11 of 37 destinations in Papua New Guinea for annual sunshine, above the national median of 2,055 hours. The year's 2,999 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 | 64 | 29° / 84°F | 28° / 82°F | 268 mm | 10 | 31° / 88°F |
| February | 64 | 29° / 84°F | 28° / 82°F | 225 mm | 11 | 30° / 86°F |
| March | 64 | 29° / 84°F | 28° / 82°F | 282 mm | 11 | 31° / 88°F |
| April | 64 | 29° / 84°F | 28° / 82°F | 256 mm | 11 | 31° / 88°F |
| May | 64 | 29° / 84°F | 28° / 82°F | 236 mm | 10 | 31° / 88°F |
| June | 64 | 29° / 84°F | 28° / 82°F | 257 mm | 9 | 31° / 88°F |
| July | 64 | 28° / 82°F | 28° / 82°F | 338 mm | 9 | 30° / 86°F |
| August | 64 | 28° / 82°F | 28° / 82°F | 239 mm | 10 | 30° / 86°F |
| September | 64 | 28° / 82°F | 28° / 82°F | 239 mm | 11 | 31° / 88°F |
| October | 64 | 29° / 84°F | 28° / 82°F | 191 mm | 11 | 31° / 88°F |
| November | 64 | 29° / 84°F | 28° / 82°F | 232 mm | 10 | 31° / 88°F |
| December | 64 | 29° / 84°F | 28° / 82°F | 236 mm | 10 | 31° / 88°F |
Sea temperature in Manus Island by month
The sea off Manus Island is warmest in January at around 31°C / 88°F, and coolest in February at 30°C / 86°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.
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Manus Island: questions and answers
What kind of destination is Manus Island?
Manus Island is a beach resort in Papua New Guinea with a tropical rainforest climate — the sea reaches 31°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Manus Island get a year?
Manus Island gets about 2,141 hours of sunshine a year, at its best around January.
When is the best time to visit Manus Island?
The sunniest time to visit Manus Island is January, when the Sunshine Score peaks at 64/100 (with February and March close behind). Expect daytime highs around 29°C / 84°F.
What is the least sunny month in Manus Island?
January is the least sunny month in Manus Island, scoring 64/100 with about 268 mm of rain.
What is the sea temperature in Manus Island?
The sea in Manus Island ranges from about 30°C (February) to 31°C (January). Month-by-month sea temperatures are on this page.
How strong is the sun in Manus Island?
The typical midday UV index in Manus Island peaks around 11 (extreme) in February, easing to about 9 (very high) in June. Month-by-month midday UV values are in the UV column of the table on this page.
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