July Weather in Unalaska, United States

Last updated: June 24, 2025

In July, the average temperature in Unalaska, United States hovers around 10°C (50°F), with a minimum of 5°C (41°F) and a maximum of 17°C (63°F). Expect 65 mm (2.6 in) of precipitation spread across 12 days, contributing to an average humidity of a notable 95%.

July Temperature in Unalaska

In July in Unalaska, the average temperature is 10°C (50°F). Maximums can reach 17°C (63°F), while minimums can drop as low as 5°C (41°F). This makes it a great time to explore Unalaska with a comfortable and mild climate, ideal for outdoor activities.

July Weather in Unalaska: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Unalaska, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Unalaska, July typically has an average temperature of 10°C (50°F), with highs reaching up to 17°C (63°F) and lows dropping to around 5°C (41°F).

Data source: Temperature data for Unalaska generated using information from the Copernicus Climate Change Service.

July Precipitation in Unalaska

In Unalaska in July, the precipitation amount is 65 mm (2.6 in) over the course of 12 days.

July Precipitation Trends in Unalaska

The chart displays monthly precipitation patterns in Unalaska, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Unalaska, July typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

July Humidity in Unalaska

In Unalaska in July, humidity is 95%. With an average temperature of 10°C (50°F), this humidity feels like a thick blanket enveloping you, making even short excursions feel like a laborious effort as the air clings to your skin, and each breath carries a heaviness that slows your pace.

July Average Humidity in Unalaska

This chart illustrates the average monthly humidity levels in Unalaska, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Unalaska is approximately 95%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Unalaska

In Unalaska in July, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Unalaska.

Maximum UV Index Levels in Unalaska for July

The chart shows the monthly maximum UV Index (UVI) for Unalaska in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In July, the maximum UV index in Unalaska typically reaches 8, which falls under the very high exposure category.

Data source: Unalaska July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How July Weather in Unalaska Compares to Other Months

Weather in Unalaska varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Unalaska, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Unalaska, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	95 mm (3.8 inches)	83%	low
February Weather	1°C (33°F)	157 mm (6.2 inches)	84%	low
March Weather	0°C (32°F)	92 mm (3.6 inches)	83%	moderate
April Weather	2°C (35°F)	99 mm (3.9 inches)	84%	moderate
May Weather	4°C (40°F)	115 mm (4.5 inches)	90%	high
June Weather	7°C (46°F)	100 mm (3.9 inches)	93%	high
July Weather	10°C (50°F)	65 mm (2.6 inches)	95%	very high
August Weather	11°C (51°F)	89 mm (3.5 inches)	92%	very high
September Weather	9°C (48°F)	117 mm (4.6 inches)	86%	moderate
October Weather	5°C (42°F)	147 mm (5.8 inches)	82%	moderate
November Weather	2°C (37°F)	113 mm (4.5 inches)	81%	low
December Weather	0°C (32°F)	157 mm (6.2 inches)	82%	low