St Petersburg weather in August 2025

Q: How hot is it in St Petersburg in August?

Daytime temperatures usually reach 20°C in St Petersburg in August, falling to 13°C at night.

Q: How sunny is it in St Petersburg in August?

There are normally 7 hours of bright sunshine each day in St Petersburg in August - that's 44% of daylight hours.

Q: Is the sea cold around St Petersburg in August?

The average sea temperature around St Petersburg in August is 11°C.

Q: Does it rain in St Petersburg in August?

There are usually 15 days with some rain in St Petersburg in August and the average monthly rainfall is 83mm.

Expect 20°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in St Petersburg in August. Check more long-term weather averages for St Petersburg in August before you book your next holiday to Russia (Europe) in 2025/2026.

20
20°C max day temperature
7
7 hours of sunshine per day
15
15 days with some rainfall
13
13°C min night temperature
16
16 hours of daylight per day
0
No heat & humidity
83
83 mm of monthly rainfall
4
4 (Moderate) UV index
11
11°C sea temperature

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The August weather guide for Russia (Europe) (St Petersburg) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

How hot is it in St Petersburg in August?

Daytime temperatures usually reach 20°C in St Petersburg in August, falling to 13°C at night.

How sunny is it in St Petersburg in August?

There are normally 7 hours of bright sunshine each day in St Petersburg in August - that's 44% of daylight hours.

Is the sea cold around St Petersburg in August?

The average sea temperature around St Petersburg in August is 11°C.

Does it rain in St Petersburg in August?

There are usually 15 days with some rain in St Petersburg in August and the average monthly rainfall is 83mm.

St Petersburg August sunrise & sunset times

Browse the sunrise and sunset times for St Petersburg in August 2025. Select a month to view St Petersburg sunrise and sunset times for the next 12 months.

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