Koyuk weather by month & the best time to visit
United States · seaside town · subarctic climate
The best time to visit Koyuk is July — its sunniest month (Sunshine Score 55/100), with June close behind. Koyuk averages about 1,846 hours of sunshine a year. Daytime highs around 17°C / 63°F and roughly 84 mm of rain in July.
When is the best time to visit Koyuk?
For sunshine, the best time to visit Koyuk is July, then June. The dullest month is January (0/100, 31 mm of rain). The full month-by-month picture is in the table below.
How sunny is Koyuk?
Koyuk gets a moderate 1,846 hours of sunshine a year. 55 Sunshine Score points separate July (55) from January (0), so the month you pick matters. It ranks #461 of 580 destinations in United States for annual sunshine, below the national median of 2,279 hours. Rain has a clear season: the wettest stretch, around August, carries about 41% of the annual 579 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | -16° / 3°F | -21° / -6°F | 31 mm | 0 | -1° / 30°F |
| February | 0 | -12° / 10°F | -19° / -2°F | 39 mm | 0 | -1° / 30°F |
| March | 0 | -10° / 14°F | -18° / 0°F | 24 mm | 1 | -1° / 30°F |
| April | 0 | -1° / 30°F | -9° / 16°F | 34 mm | 2 | -1° / 30°F |
| May | 0 | 8° / 46°F | 1° / 34°F | 35 mm | 3 | 1° / 34°F |
| June | 54 | 16° / 61°F | 7° / 45°F | 48 mm | 3 | 11° / 52°F |
| July | 55 | 17° / 63°F | 10° / 50°F | 84 mm | 3 | 13° / 55°F |
| August | 42 | 15° / 59°F | 8° / 46°F | 92 mm | 2 | 12° / 54°F |
| September | 6 | 9° / 48°F | 3° / 37°F | 63 mm | 1 | 10° / 50°F |
| October | 0 | 0° / 32°F | -4° / 25°F | 54 mm | 0 | 6° / 43°F |
| November | 0 | -10° / 14°F | -15° / 5°F | 38 mm | 0 | 1° / 34°F |
| December | 0 | -14° / 7°F | -19° / -2°F | 37 mm | 0 | -1° / 30°F |
Sea temperature in Koyuk by month
The sea off Koyuk is warmest in July at around 13°C / 55°F, and coolest in January at -1°C / 30°F. It never reaches comfortable swimming temperatures (21°C+). Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Koyuk: questions and answers
What kind of destination is Koyuk?
Koyuk is a seaside town in United States with a subarctic climate — the sea reaches 13°C at its warmest.
How many hours of sunshine does Koyuk get a year?
Koyuk gets about 1,846 hours of sunshine a year, at its best around July.
When is the best time to visit Koyuk?
The sunniest time to visit Koyuk is July, when the Sunshine Score peaks at 55/100 (with June close behind). Expect daytime highs around 17°C / 63°F.
What is the least sunny month in Koyuk?
January is the least sunny month in Koyuk, scoring 0/100 with about 31 mm of rain.
What is the sea temperature in Koyuk?
The sea in Koyuk ranges from about -1°C (January) to 13°C (July). Month-by-month sea temperatures are on this page.
How strong is the sun in Koyuk?
The typical midday UV index in Koyuk peaks around 3 (moderate) in May, easing to about 0 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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