Climate of Unalaska

Unalaska has a mediterranean climate. Summers are cool and dry, and the temperature is cold in the winter. The average annual temperature for Unalaska is 6° degrees and there is about 684 mm of rain in a year. It is dry for 77 days a year with an average humidity of 85% and an UV-index of 2.

Climate averages for the whole year

Day: the average daily temperature during the day is between 2°C and 12°C
Night:the average nighttime temperature is between -1°C and 10°C
Sea temperature: the sea temperature is between 5°C and 12°C
Rain: it rains 193 days and there is a total of approximately 684 mm rainfall
Snow: it snows an average of 76 days per year
Sun hours: throughout the year there are 1514 sun hours

Maximum temperature:	between 2°C and 12°C
Warmest month:	12°C in August
Coldest month:	2°C in January
Night temperature:	between -1°C and 10°C
Sea temperature:	between 5°C and 12°C
Dry days:	96 days
Days with rain:	193 days
Days with snow:	76 days
Total rain sum:	684 mm
Hours of sunshine:	1514 hours

Climate of Unalaska
Temperature graph
Precipitation graph
Climate chart of Unalaska
The best travel time for Unalaska
Climate of Unalaska by month
Experiences with the weather of Unalaska

Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Unalaska.

Precipitation graph

This graph shows the average amount of rainfall per month for Unalaska.

Climate table of Unalaska

In this climate table you can see at a glance what the average weather per month is for Unalaska. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Unalaska might be like in a given month.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Day temp. (°C)	2	2	2	3	5	8	10	12	10	7	5	3
Night temp. (°C)	0	0	-1	1	4	7	9	10	9	6	3	1
Water temp. (°C)	5	5	5	5	6	9	11	12	11	9	7	7
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Precipitation (mm)	75	51	50	52	38	35	41	49	63	74	70	86
Days with rain	13	11	11	15	17	17	19	18	19	21	17	15
Days with snow	14	13	13	12	4	-	-	-	-	1	7	12
Dry days	4	4	7	3	10	13	12	13	11	9	6	4
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sun hours per day	3	3	4	4	5	6	5	5	5	4	3	2
Wind force (Bft)	4	4	4	4	3	3	3	3	4	4	4	4
UV-index	2	1	1	1	2	2	3	3	2	2	2	2

Best time to visit Unalaska

The best time to visit Unalaska in the state of Alaska is from January through December. In this period you have a very cold temperature and little precipitation. The highest average temperature in Unalaska is 12°C in August and the lowest is 2°C in January. The highest water temperature is 12°C and it does not get colder than 5°C.

Climate of Unalaska by month

What is the average climate in a given month for Unalaska? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

January