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Monthly climate in Bethel, Alaska, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Bethel features a subarctic climate (Dfc).Temperatures typically range between -13 °C (9 °F) and 14 °C (58 °F) through the year, but rarely can drop to -36 °C (-33 °F) or can rise to as high as 32 °C (90 °F).The average annual precipitation amounts to about 753 mm (29.6 inches) and receives 149 rainy days on the 1 mm (0.04 inches) threshold annually.Bethel enjoys an average of 1984 hours of sunshine throughout the year, and daylight varies from 5 hours 44 minutes to 19 hours 0 minutes per day.

Monthly average temperatures in Bethel, Alaska, United States §

The warmest months in Bethel are June, July and August, with daily mean temperatures ranging from 13 to 14 °C (55 - 58 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -13 to -10 °C (9 - 15 °F) throughout the day. On average each year, Bethel experiences 1 days above 25 °C (77.0 °F) and 169 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Bethel, Alaska, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 5°C
(41°F)		 5°C
(41°F)		 10°C
(50°F)		 14°C
(58°F)		 23°C
(73°F)		 24°C
(76°F)		 32°C
(90°F)		 26°C
(80°F)		 19°C
(67°F)		 19°C
(66°F)		 6°C
(42°F)		 6°C
(43°F)
Mean maximum 3°C
(38°F)		 3°C
(39°F)		 3°C
(37°F)		 11°C
(53°F)		 20°C
(68°F)		 22°C
(72°F)		 26°C
(78°F)		 23°C
(73°F)		 17°C
(63°F)		 12°C
(55°F)		 4°C
(40°F)		 4°C
(40°F)
Average high -10°C
(14°F)		 -6°C
(21°F)		 -4°C
(25°F)		 4°C
(40°F)		 12°C
(54°F)		 16°C
(62°F)		 17°C
(63°F)		 16°C
(60°F)		 12°C
(53°F)		 6°C
(43°F)		 -3°C
(26°F)		 -7°C
(20°F)
Daily mean -13°C
(9°F)		 -10°C
(15°F)		 -7°C
(19°F)		 0°C
(33°F)		 8°C
(46°F)		 13°C
(55°F)		 14°C
(58°F)		 13°C
(55°F)		 8°C
(48°F)		 3°C
(38°F)		 -6°C
(21°F)		 -10°C
(15°F)
Average low -16°C
(3°F)		 -13°C
(9°F)		 -11°C
(13°F)		 -3°C
(27°F)		 3°C
(39°F)		 9°C
(49°F)		 11°C
(52°F)		 10°C
(50°F)		 6°C
(43°F)		 1°C
(34°F)		 -9°C
(16°F)		 -13°C
(10°F)
Mean minimum -31°C
(-23°F)		 -26°C
(-14°F)		 -23°C
(-9°F)		 -15°C
(5°F)		 -3°C
(27°F)		 6°C
(43°F)		 7°C
(45°F)		 6°C
(42°F)		 -0°C
(32°F)		 -8°C
(17°F)		 -20°C
(-3°F)		 -28°C
(-18°F)
Minimum -36°C
(-33°F)		 -33°C
(-28°F)		 -30°C
(-21°F)		 -25°C
(-12°F)		 -7°C
(20°F)		 3°C
(37°F)		 6°C
(44°F)		 3°C
(38°F)		 -4°C
(25°F)		 -11°C
(12°F)		 -32°C
(-25°F)		 -32°C
(-25°F)

Compare climate in Bethel with other places

Compare temperature, precipitation, sunshine, UV index in Bethel, Alaska, United States with other places around the world.

Monthly average precipitation in Bethel, Alaska, United States §

Bethel usually has the most precipitation in August, September and October, with an average of 14 rainy days and 86 mm (3.4 inches) of precipitation per month.The driest months in Bethel are January, March and April. On average, 41 mm (1.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Bethel, Alaska, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 28 (1.1) 56 (2.2) 48 (1.9) 47 (1.9) 61 (2.4) 69 (2.7) 64 (2.5) 86 (3.4) 83 (3.3) 89 (3.5) 62 (2.5) 58 (2.3)
Average precipitation days (≥ 1 mm) 7 13 11 9 14 15 12 13 15 16 11 13

Monthly sunshine hours in Bethel, Alaska, United States §

The sunniest months in Bethel are April, May and June, when the sun shines an average of 9 hours 3 minutes a day.Least sunny months in Bethel: January, November and December receive an average of 2 hours 7 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Bethel, Alaska, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 57 103 179 240 299 284 208 179 163 130 88 49
Mean daily daylight hours 6h 37m 9h 5m 11h 54m 14h 45m 17h 26m 19h 0m 18h 5m 15h 34m 12h 46m 9h 56m 7h 16m 5h 44m

Solar UV radiation in Bethel, Alaska, United States §

Bethel experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 5 - 6, which corresponds to the Moderate / High category of sun exposure.January, November and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 1. For more detailed information, check out our hourly Bethel UV Index data.

Average daily maximum UV levels by month for Bethel, Alaska, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 1 2 3 4 5 6 6 5 4 2 1 1