July weather forecast
Unalaska, AK

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Weather in July

The heart of summer in July treats Unalaska with the warmest temperatures of the year, peaking at an average high of 53.2°F (11.8°C), coinciding with a lower rainfall value of 1.85" (47mm). The prevailing summer weather also exhibits longer daylight hours, although slightly fewer than in June. Despite being the warmest, the wind speed remains on the lower side, contributing to July's warm feel. The UV index elevates to three, necessitating the use of UV protection. The pressure is at its maximum, reaching 29.98" (761mm), indicating more stable weather conditions.

Temperature

Unalaska's average high-temperature in July is a fresh 50.5°F (10.3°C), indicating a subtle variation from June. Registering an almost steady temperature, Unalaska's nights in July see an average low of 46.8°F (8.2°C).

Humidity

With an average relative humidity of 91%, July is the most humid month in Unalaska, Alaska.

Rainfall

The month with the least rainfall in Unalaska is July, when the rain falls for 19.2 days and typically collects 1.85" (47mm) of precipitation.

Snowfall

June through September are months without snowfall.

Ocean temperature

In Unalaska, the average seawater temperature in July is 48.4°F (9.1°C).
Note: Being in 48.4°F (9.1°C) waters at 55.4°F (13°C) is discomforting, but anything below 50°F (10°C) can jeopardize breathing and induce cold shock, factoring in physical endurance.

Daylight

In July, the average length of the day in Unalaska is 16h and 29min.
On the first day of the month, sunrise is at 6:40 am and sunset at 11:40 pm. On the last day of July, sunrise is at 7:20 am and sunset at 11:04 pm AKDT.

Sunshine

In Unalaska, the average sunshine in July is 4.9h.

UV index

July and August, with an average maximum UV index of 3, are months with the highest UV index in Unalaska. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum UV index of 3 in July translates into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
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Frequently asked questions

What are July temperatures in Unalaska?

The high-temperature, in July, in Unalaska, records 50.5°F (10.3°C), while the low-temperature is 46.8°F (8.2°C).

What is the most humid month in Unalaska?

With an average relative humidity of 91%, July is the most humid month in Unalaska.

What is the average humidity in July in Unalaska?

The average relative humidity in July in Unalaska is 91%.

What is the driest month in Unalaska?

The month with the least rainfall in Unalaska is July, when the rain falls for 19.2 days and typically collects 1.85" (47mm) of precipitation.

How much does it rain in Unalaska in July?

In Unalaska, during July, the rain falls for 19.2 days and regularly aggregates up to 1.85" (47mm) of precipitation.

When it does not snow in Unalaska?

June through September are months without snowfall in Unalaska, Alaska.

What is the ocean temperature in July in Unalaska?

In Unalaska, Alaska, the average seawater temperature in July is 48.4°F (9.1°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

How many hours of daylight does Unalaska have in July?

In July, the average day length is 16h and 29min.

When are sunrise and sunset in July in Unalaska?

In July, on the first day of the month, sunrise is at 6:40 am and sunset at 11:40 pm. On the last day of the month, in Unalaska, sunrise is at 7:20 am and sunset at 11:04 pm AKDT.

How many hours of sunshine does Unalaska have in July?

In Unalaska, the average sunshine duration in July is 4.9h.

When is the highest UV index in Unalaska?

July and August, with an average maximum UV index of 3, are months with the highest UV index.

What is the UV index intensity in July in Unalaska?

In July, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJulyASOND
Jun
July
Aug
Average high temperature
46.4°F 8°C
50.5°F 10.3°C
53.2°F 11.8°C
Average low temperature
43°F 6.1°C
46.8°F 8.2°C
49.6°F 9.8°C
Average pressure
29.88" 759mmHg
29.98" 761mmHg
29.92" 760mmHg
Average wind speed
9.6mph 15.4km/h
9.1mph 14.6km/h
9.6mph 15.4km/h
Average max. wind speed
10.1mph 16.3km/h
9.6mph 15.4km/h
10.2mph 16.4km/h
Average wind speed gusts
15.3mph 24.6km/h
15.2mph 24.5km/h
15.3mph 24.6km/h
Average humidity
89%
91%
90%
Average rainfall
2.13" 54mm
1.85" 47mm
2.56" 65mm
Average rainfall days
17.2
19.2
17.8
Average snowfall
0" 0mm
0" 0mm
0" 0mm
Average snowfall days
0
0
0
Average sea temperature
44.5°F 6.9°C
48.4°F 9.1°C
50.1°F 10.1°C
Average daylight
17h 0min
16h 3min
14h 5min
Average sunshine
5h 5min
4h 5min
5h 3min
Average sunshine days
8.8
8.6
9.7
Average UV index
2
3
3
Average cloud cover
70%
74%
67%
Average visibility
6mi 9.7km
5mi 8km
6mi 9.7km

Average temperature in July
Unalaska, AK

Average temperature in July - Unalaska, AK
  • Average high temperature in July: 50.5°F

The warmest month (with the highest average high temperature) is August (53.2°F).
The month with the lowest average high temperature is March (34.7°F).

  • Average low temperature in July: 46.8°F

The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is March (30.7°F).

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Average pressure in July
Unalaska, AK

Average pressure in July - Unalaska, AK
  • Average pressure in July: 29.98"Hg

The month with the highest atmospheric pressure is July (29.98"Hg).
The month with the lowest atmospheric pressure is January (29.5"Hg).

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Average wind speed in July
Unalaska, AK

Average wind speed in July - Unalaska, AK
  • Average wind speed in July: 9.1mph

The windiest months (with the highest average wind speed) are November and December (16.5mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).

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Average humidity in July
Unalaska, AK

Average humidity in July - Unalaska, AK
  • Average humidity in July: 91%

The month with the highest relative humidity is July (91%).
The months with the lowest relative humidity are November and December (80%).

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Average rainfall in July
Unalaska, AK

Average rainfall in July - Unalaska, AK
  • Average rainfall in July: 1.85"

The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is July (1.85").

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Average rainfall days in July
Unalaska, AK

Average rainfall days in July - Unalaska, AK
  • Average rainfall days in July: 19.2 days

The month with the highest number of rainy days is October (21.8 days).
The month with the least rainy days is February (11.1 days).

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Average snowfall in July
Unalaska, AK

Average snowfall in July - Unalaska, AK
  • Average snowfall in July: 0"

The month with the highest snowfall is January (6.97").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Unalaska, AK

Average snowfall days in July - Unalaska, AK
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in July
Unalaska, AK

Average sea temperature in July - Unalaska, AK
  • Average sea temperature in July: 48.4°F

The best month for swimming (with the highest average sea temperature) is August (50.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).

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Average daylight in July /
Average sunshine in July
Unalaska, AK

Average daylight in July / Average sunshine in July - Unalaska, AK
  • Average daylight in July: 16h and 3min

The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 30min).

  • Average sunshine in July: 4h and 5min

The month with the most sunshine is June (Average sunshine: 5h and 48min).
The month with the least sunshine is December (Average sunshine: 2h and 0min).

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Average sunshine days in July
Unalaska, AK

Average sunshine days in July - Unalaska, AK
  • Average sunshine days in July: 8.6 days

The month with the most sunshine days is August (9.7 days).
The month with the least sunshine days is April (3.8 days).

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Average UV index in July
Unalaska, AK

Average UV index in July - Unalaska, AK
  • Average UV index in July: 3

The months with the highest UV index are July and August (UV index 3).
The months with the lowest UV index are February, March, April and November (UV index 1).

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Average cloud cover in July
Unalaska, AK

Average cloud cover in July - Unalaska, AK
  • Average cloud cover in July: 74

The month with the most cloud cover is July (Cloud cover 74).
The months with the least cloud cover are September and October (Cloud cover 66).

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Average visibility in July
Unalaska, AK

Average visibility in July - Unalaska, AK
  • Average visibility in July: 5mi

The months with the highest visibility are May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April, July and December (5mi).

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Unalaska, Alaska, USA

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