Port St Johns weather in August 2025

Expect 21°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Port St Johns in August. Check more long-term weather averages for Port St Johns in August before you book your next holiday to South Africa in 2025/2026.

  • 21°C maximum daytime temperature in August in Port St Johns21
    21°C max day temperature
  • 8 hours of sunshine per day
  • 6 days with some rainfall in August in Port St Johns6
    6 days with some rainfall
  • 13°C minimum night-time temperature in August in Port St Johns13
    13°C min night temperature
  • 11 hours of daylight per day in August in Port St Johns11
    11 hours of daylight per day
  • No heat & humidity in August in Port St Johns0
    No heat & humidity
  • 49 mm monthly rainfall in August in Port St Johns49
    49 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Port St Johns5
    5 (Moderate) UV index
  • 21°C sea temperature in August in Port St Johns21
    21°C sea temperature

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The August weather guide for South Africa (Port St Johns) 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)

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More about South Africa

How hot is it in Port St Johns in August?

Daytime temperatures usually reach 21°C in Port St Johns in August, falling to 13°C at night.

How sunny is it in Port St Johns in August?

There are normally 8 hours of bright sunshine each day in Port St Johns in August - that's 69% of daylight hours.

How warm is the sea around Port St Johns in August?

The average sea temperature around Port St Johns in August is 21°C.

Does it rain in Port St Johns in August?

There are usually 6 days with some rain in Port St Johns in August and the average monthly rainfall is 49mm.

Port St Johns August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 06:50 17:27
Saturday, 16th August 2025 06:37 17:36
Sunday, 31st August 2025 06:19 17:45

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