Knysna weather in May 2025

Expect 20°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Knysna in May based on long-term weather averages. There is usually 9 days with some rainfall and 71 mm of average monthly rainfall in May.

  • 20°C maximum daytime temperature in May in Knysna20
    20°C max day temperature
  • 6 hours of sunshine per day
  • 9 days with some rainfall in May in Knysna9
    9 days with some rainfall
  • 12°C minimum night-time temperature in May in Knysna12
    12°C min night temperature
  • 10 hours of daylight per day in May in Knysna10
    10 hours of daylight per day
  • No heat & humidity in May in Knysna0
    No heat & humidity
  • 71 mm monthly rainfall in May in Knysna71
    71 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in May in Knysna3
    3 (Moderate) UV index
  • 18°C sea temperature in May in Knysna18
    18°C sea temperature

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The May weather guide for South Africa (Knysna) 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 Knysna in May?

Daytime temperatures usually reach 20°C in Knysna in May, falling to 12°C at night.

How sunny is it in Knysna in May?

There are normally 6 hours of bright sunshine each day in Knysna in May - that's 61% of daylight hours.

How warm is the sea around Knysna in May?

The average sea temperature around Knysna in May is 18°C.

Does it rain in Knysna in May?

There are usually 9 days with some rain in Knysna in May and the average monthly rainfall is 71mm.

Knysna May sunrise & sunset times

Browse the sunrise and sunset times for Knysna in May 2025. Select a month to view Knysna sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 07:03 17:47
Friday, 16th May 2025 07:14 17:34
Saturday, 31st May 2025 07:24 17:27

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