Best year time to visit Unalaska

General weather information about Unalaska

Average annual temperature is 5.0 °C

Absolute maximum temperature: 21.4 °C

Absolute minimum temperature: -11.2 °C

Number of sunny days: 47 days

Number of rainy days: 273 days

Number of snow days: 45 days

Look at detailed online map of Unalaska

* Weather data for Unalaska United States is based on climate observations for 2026 year

Unalaska air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	5.2	8.5	6.5	7.8	9.7	15.2	21.4	16.5	15.4	9.5	12.8	7.5
Average daytime temperature (°C)	2.5	3.5	3.5	4.7	6.1	10.1	14.1	13.5	11.8	8.2	6.5	1.4
Average temperature (°C)	0.8	1.1	1.7	2.3	4.1	7.7	11.2	10.9	9.4	6.8	4.3	-1.2
Average night temperature (°C)	-1.2	-0.9	0.1	0.5	2.9	6.1	9.6	9.1	7.6	5.7	2.7	-3.7
Absolute minimum temperature (°C)	-8.0	-9.0	-5.5	-2.6	0.2	1.9	6.1	5.7	3.4	2.4	-3.2	-11.2

Unalaska monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	8.0	10.0	12.0	15.0	16.0	17.0	17.0	15.0	13.0	11.0	9.0	7.0
Daylight mean duration (h)	8.1	9.8	11.9	14.0	16.0	17.0	16.5	14.8	12.7	10.6	8.6	7.5
Daylight minimum duration (h)	7.0	8.0	10.0	13.0	15.0	16.0	15.0	13.0	11.0	9.0	7.0	7.0
Sunshine mean duration (h)	2.4	3.8	4.9	6.3	3.6	5.5	4.9	5.2	5.7	3.4	2.8	3.7
Precipitation (mm)	75	148	143	76	128	98	127	102	130	157	146	85
Sunny days	4	3	4	5	1	2	7	6	4	3	5	3
Rainy days	16	19	20	21	29	28	24	25	26	28	24	13
Snow days	11	6	7	4	1	0	0	0	0	0	1	15

Unalaska - weather forecast by months

Unalaska weather in january Unalaska weather in february Unalaska weather in march Unalaska weather in april Unalaska weather in may Unalaska weather in june Unalaska weather in july Unalaska weather in august Unalaska weather in september Unalaska weather in october Unalaska weather in november Unalaska weather in december

Best time to visit Unalaska:

The best time to visit Unalaska during the most sunny months:

April — 6.3(h)
June — 5.5(h)
September — 5.7(h)

Months with the longest average daylight duration in Unalaska:

May — 16.0(h)
June — 17.0(h)
July — 16.5(h)

The largest precipitation sum in Unalaska is at

October — 157(mm)

Weather forecast in the closest to Unalaska admin centers