Knysna Weather in May
May in Knysna averages 20°C (68°F) during the day and 13°C (55°F) at night. The perfect conditions and moderate rainfall make it a solid month to visit.
Rainfall in Knysna in May
Typically around 9 days of rainfall are expected, averaging 50 mm (2 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Knysna in May
May is a perfect month in Knysna, with 20°C (68°F) during the day and 13°C (55°F) at night. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 13°C (55°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Knysna in May
There are approximately 261 hours of sunshine this month, resulting in mostly clear days.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Africa, check out our Knysna's climate page.
Knysna Temperature in May
Min Temperature
13°C (55°F)
Max Temperature
20°C (68°F)
Chance of Rain
29%
Precipitation
50 mm (2 in)
Rainy days
9 days
Sunshine
261 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Knysna typically stay consistent throughout May, with daily highs averaging around 20°C (68°F). Nights are cool, with lows typically ranging from 10°C (50°F) to 12°C (54°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Knysna in May
Browse day-by-day weather records for Knysna spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Knysna historical weather extremes in May
Based on weather observations in Knysna between 2004 and 2025, these are the recorded extremes during May.
- The warmest day in May was on May 6, 2007, with a maximum of 37°C (99°F).
- The lowest daytime temperature in May was 9°C (48°F), recorded on May 21, 2007.
- Knysna registered its coldest May night on May 21, 2007, with temperatures dropping to 5°C (41°F).
Best Places in South Africa in May
Find out more about the weather in South Africa and which places have the best travel conditions in this month. See all of South Africa in May →
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What to Wear in Knysna in May
For Knysna in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Knysna in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Africa, check out our Knysna's climate page.
See the full Knysna climate overview or explore weather in South Africa.
