Biak weather by month & the best time to visit
Indonesia · beach resort · tropical rainforest climate
The best time to visit Biak is January — its sunniest month (Sunshine Score 63/100), with February and March close behind. Biak averages about 2,053 hours of sunshine a year. Daytime highs around 28°C / 82°F and roughly 270 mm of rain in January.
When is the best time to visit Biak?
For sunshine, the best time to visit Biak is January, then February and March. The dullest month is January (63/100, 270 mm of rain). The full month-by-month picture is in the table below.
How sunny is Biak?
Biak gets a moderate 2,053 hours of sunshine a year. Conditions barely change through the year — only 0 Sunshine Score points separate January from January. It ranks #87 of 119 destinations in Indonesia for annual sunshine, below the national median of 2,183 hours. The year's 2,878 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 | 63 | 28° / 82°F | 27° / 81°F | 270 mm | 10 | 31° / 88°F |
| February | 63 | 28° / 82°F | 27° / 81°F | 203 mm | 11 | 30° / 86°F |
| March | 63 | 28° / 82°F | 27° / 81°F | 267 mm | 11 | 30° / 86°F |
| April | 63 | 29° / 84°F | 27° / 81°F | 238 mm | 11 | 31° / 88°F |
| May | 63 | 29° / 84°F | 28° / 82°F | 224 mm | 10 | 31° / 88°F |
| June | 63 | 28° / 82°F | 27° / 81°F | 276 mm | 9 | 31° / 88°F |
| July | 63 | 28° / 82°F | 27° / 81°F | 261 mm | 9 | 30° / 86°F |
| August | 63 | 28° / 82°F | 27° / 81°F | 219 mm | 10 | 31° / 88°F |
| September | 63 | 28° / 82°F | 27° / 81°F | 223 mm | 11 | 31° / 88°F |
| October | 63 | 29° / 84°F | 28° / 82°F | 217 mm | 11 | 31° / 88°F |
| November | 63 | 29° / 84°F | 28° / 82°F | 207 mm | 10 | 31° / 88°F |
| December | 63 | 29° / 84°F | 28° / 82°F | 273 mm | 10 | 31° / 88°F |
Sea temperature in Biak by month
The sea off Biak 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.
Nearest destinations
Biak: questions and answers
What kind of destination is Biak?
Biak is a beach resort in Indonesia 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 Biak get a year?
Biak gets about 2,053 hours of sunshine a year, at its best around January.
When is the best time to visit Biak?
The sunniest time to visit Biak is January, when the Sunshine Score peaks at 63/100 (with February and March close behind). Expect daytime highs around 28°C / 82°F.
What is the least sunny month in Biak?
January is the least sunny month in Biak, scoring 63/100 with about 270 mm of rain.
What is the sea temperature in Biak?
The sea in Biak 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 Biak?
The typical midday UV index in Biak 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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