Normal weather for Sitka in September
It's cool to moderate in September in Sitka with an average temperature of 15°C. Temperatures this month range from a low of 14°C to a high of 17°C. At night, you can expect temperatures between 9°C and 12°C.
In September, there is an average of 303 mm of precipitation, spread over 27 days. The wind speed is around 2 Bft, mostly coming from the South.
Sitka in September |
London | ||
|---|---|---|---|
 Average Temperature |
15°C | 20°C | |
 High Temp |
17°C | 22°C | |
| Low Temp |
14°C | 17°C | |
 Total Precipitation |
303 mm | 44 mm | |
| Rainy Days |
27 days | 8 days | |
Start of September
The month of September starts in Sitka with cool temperatures, averaging around 17°C during the day and nights close to 12°C. Plenty of days with a chance of precipitation.
Since temperatures can differ between day and night, it’s a good idea to dress in layers. During the day, go for a light coat, jumper or cardigan, and long trousers. In the evening and morning, we recommend a warm coat, jumper or cardigan, and long trousers.
Mid-September
By mid-September, the average daytime temperature drops to around 16°C, with nights close to 11°C. The chance of precipitation is high during this period.
Temperatures vary between day and night, so it’s smart to wear layers. During the day, go for a light coat, jumper or cardigan, and long trousers. In the evening and morning, we recommend a warm coat, jumper or cardigan, and long trousers.
End of September
By the end of September, the average daytime temperature in Sitka will be around 15°C, with nights close to 10°C. There’s a significant chance of many days with precipitation.
As it gets cooler in the evening, it’s best to wear layers. During the day, go for a light coat, jumper or cardigan, and long trousers. In the evening and morning, we recommend a warm coat, jumper or cardigan, and long trousers.
UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is September a good time to visit Sitka?
Looking for sun and warm weather? Then September isn’t the best time to be in Sitka. The temperature is too low this month for a warm stay.
Temperature records for Sitka in September
With 23°C, Sitka hit the highest temperature in the last 10 years in September 2023. The lowest daytime temperature in this month was 8°C in 2015. The extreme night temperatures ranged from a low of 4°C to a high of 17°C.
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Daily Temperature in September in Sitka
This chart shows the average daily temperatures, both day and night, for each day in September in Sitka, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Sitka
The chart below shows the average daily precipitation in September for Sitka, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 27 days of rain in Sitka.
Daily UV Index in September in Sitka
This chart shows the average daily UV index in September in Sitka, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Sitka Over the Years
This chart shows the average temperature in September in Sitka, measured in degrees Celsius, over the past years.
Total Precipitation in September in Sitka Over the Years
This chart shows the average precipitation in September in Sitka, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Sitka
Click on a specific day in September for detailed info on the typical weather on that day in Sitka. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Sitka
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Average Weather in Sitka by Month
Click on a month below to see detailed weather info for Sitka. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
