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Weather extremes

How extreme does Biak's weather get?

The hottest, coldest, wettest and snowiest days Biak has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 34 years of daily weather observations (1991–present), from the Frans Kaisiepo station 3 km away. Updated through August 2025 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Biak has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
104°F Jun 2, 2010

That is about 17°F hotter than a normal June afternoon in Biak (typical high near 86°F).

The three most extreme on record

1 104°F Jun 2, 2010
2 103°F Jun 24, 2005
3 103°F Jan 19, 2011
❄️ Coldest night
52°F Sep 26, 2006

About 23°F colder than a normal September night in Biak (typical low near 75°F).

The three most extreme on record

1 52°F Sep 26, 2006
2 55°F Aug 11, 2008
3 55°F Mar 31, 1994
🌧️ Most rain in one day
17.15 in May 22, 2024

More rain in a single day than Biak usually gets in the whole month of May (typical May total about 3.9 in).

The three most extreme on record

1 17.15 in May 22, 2024recent
2 15.78 in Nov 6, 2023
3 13.80 in Feb 25, 2024

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

30°50°70°90°110°130° all-time high 104°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Biak's record heat sits well above even a hot day for the season — June's 104°F is about 17°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Biak's warmest days reach the high 80s°F and its coldest nights drop to the mid-70s°F. But across the record it has gone as high as 104°F and as low as 52°F. A single day has delivered over 17 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 24 years of daily observations at Frans Kaisiepo, a weather station, about 3 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →