Sitka, AK weather in August
Expect cool weather with rain on most days in Sitka in August, with highs near 62°F and lows near 53°F. Rain falls on about 19 days. Even so, it is one of the warmest months in Sitka. Pack rain gear.
- Normal high
- 62°F
- Normal low
- 53°F
- Wet days
- 19
- 7.3 in total
- Muggy days
- 0
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 62°F | 61°F |
| Normal low | 54°F | 51°F |
| Chance of a wet day | 60% | 69% |
| Sunrise / sunset | 5:00 am / 9:15 pm | 6:01 am / 8:01 pm |
| Daylight | 16.2 h | 14.0 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Alaska Time).
A typical August day
- 6 am55°Fdew point 52°F
- 9 am57°Fdew point 53°F
- Noon59°Fdew point 53°F
- 3 pm60°Fdew point 53°F
- 6 pm59°Fdew point 53°F
- 9 pm57°Fdew point 53°F
NOAA hourly normals (local standard time) from Sitka Airport (1 mi away); average wind 6 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F7 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph0 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow19 of 31
- Notable rainat least 0.10 in13 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 7.3 in; a dry August brings about 4.5 in and a wet one about 9.8 in (25th and 75th percentiles). About 5 days bring half an inch or more, and about 2 an inch or more.
How August varies from year to year
- Warmest August, 1991-20202004: average high 68°F
- Coolest August2006: average high 58°F
- Wettest August2014: 13.9 in
- Driest August2019: 1.6 in
- Highest reading83°F (August 10, 2004)
- Lowest reading41°F (August 6, 1991)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 60°F | 62°F | 58°F |
| Normal low | 53°F | 53°F | 49°F |
| Wet days | 19 | 19 | 22 |
| Comfortable days | 5 | 7 | 2 |
| Daylight | 17.1 h | 15.2 h | 12.8 h |
Highs change by +2°F from July and -4°F into September.
Nearby alternatives in August
- Drier: Skagway, AK166 mi · high 63°F · 15 wet days
How Sitka ranks in August
- Normal high377th warmest of 378 cities; 7th of 8 in Alaska
- Wet days374th driest of 378
- Comfortable days97th most of 341
What to pack for Sitka in August
- A rain jacket or umbrella – rain on about 19 days
Heating and cooling
August has 238 heating degree days and 1 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How cold is Sitka in August?
The normal high is 62°F and the normal low is 53°F. From 1991 to 2020 the coldest August reading was 41°F (August 6, 1991).
Does it rain a lot in Sitka in August?
About 19 days in August have at least 0.01 in of precipitation, and the normal total is 7.3 in. The wettest August in 1991-2020 was in 2014 (13.9 in); the driest was in 2019 (1.6 in).
Is August a good time to visit Sitka?
August ranks 1st of 12 months on our comfort score for Sitka (59 out of 100). It has about 7 comfortable days. The best months are June, July and August.
Where the numbers come from
- Temperature, rain, frost dates and humidity and wind by hour: Sitka Airport (USW00025333), 1.4 mi WSW of the city center, 14 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Sitka Rocky Gutierrez Arpt (703710-25333), 1.4 mi WSW of the city center, 20 ft . Hourly observations, 1991-2020.
- Not available for this location: snowfall, snow depth and cloud cover (no station close enough or similar enough in elevation).