Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The arrival of August brings an average high-temperature of a still refreshing 64.4°F (18°C), closely following the temperature pattern of July. Roche Harbor consistently logs a low temperature averaging a mild 57.7°F (14.3°C) during August, a modest drop from daytime temperatures.Humidity
January, August and September, with an average relative humidity of 79%, are the most humid months.Rainfall
In Roche Harbor, in August, it is raining for 5.3 days, with typically 0.71" (18mm) of accumulated precipitation. Throughout the year, in Roche Harbor, Washington, there are 167.7 rainfall days, and 23.46" (596mm) of precipitation is accumulated.Snowfall
In Roche Harbor, snow does not fall in April through October.Daylight
In August, the average length of the day in Roche Harbor is 14h and 17min.On the first day of the month, sunrise is at 5:48 am and sunset at 8:49 pm. On the last day of August, in Roche Harbor, sunrise is at 6:29 am and sunset at 7:55 pm PDT.
Sunshine
The average sunshine in August is 10.8h.UV index
The average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 4 during August leads to these instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
What is the average August temperature in Roche Harbor?
What are the most humid months in Roche Harbor?
What is the average humidity in August in Roche Harbor?
How much does it rain in Roche Harbor in August?
When it does not snow in Roche Harbor?
What is the average length of the day in August in Roche Harbor?
When are sunrise and sunset in August in Roche Harbor?
How long on average sun shines in August in Roche Harbor?
How high is the UV index in August in Roche Harbor?
Average temperature in August
Roche Harbor, WA
- Average high temperature in August: 64.4°F
The warmest month (with the highest average high temperature) is July (64.9°F).
The months with the lowest average high temperature are January, February and December (45.3°F).
- Average low temperature in August: 57.7°F
The month with the highest average low temperature is August (57.7°F).
The coldest month (with the lowest average low temperature) is February (40.5°F).
Average pressure in August
Roche Harbor, WA
- Average pressure in August: 30.02"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in August
Roche Harbor, WA
- Average wind speed in August: 4.9mph
The windiest month (with the highest average wind speed) is November (10.7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in August
Roche Harbor, WA
- Average humidity in August: 79%
The months with the highest relative humidity are January, August and September (79%).
The month with the lowest relative humidity is April (76%).
Average rainfall in August
Roche Harbor, WA
- Average rainfall in August: 0.71"
The wettest month (with the highest rainfall) is November (3.43").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in August
Roche Harbor, WA
- Average rainfall days in August: 5.3 days
The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (5.3 days).
Average snowfall in August
Roche Harbor, WA
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Roche Harbor, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Roche Harbor, WA
- Average daylight in August: 14h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in August: 10h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in August
Roche Harbor, WA
- Average sunshine days in August: 24.7 days
The month with the most sunshine days is August (24.7 days).
The month with the least sunshine days is November (8.7 days).
Average UV index in August
Roche Harbor, WA
- Average UV index in August: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Roche Harbor, WA
- Average cloud cover in August: 23
The months with the most cloud cover are February and December (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 23).
Average visibility in August
Roche Harbor, WA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Roche Harbor, Washington, USA
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