Cool
Average highs are around 19°C, so pack for cooler days.
September verdict
Knysna, South Africa in September
Weather score42Mixed
Mixed for holiday weather
Average highs are around 19°C, so pack for cooler days. Sunshine averages 6.9h per day, enough for a balanced month. Rainfall averages 75mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
19°C
Rain
75mm
Sun
6.9h
Sea
17°C
Weather score
42
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 75mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.9h per day, enough for a balanced month.
Cool sea
Sea temperatures average 17°C, so the water can feel cool.
Map
Weather map
Compare Knysna, South Africa with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September19°C average high
September has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJanuary to March and December
This stretch sets the upper range for average daytime heat.
Rain
September75mm average rain
September sits near Knysna's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to July and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September6.9 hours average sun
September is below Knysna's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsJanuary to February and November to December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September17°C average sea
September is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJanuary to March and December
Sea temperatures are usually near 21°C in this stretch, so swimming comfort is at its strongest.
Weather score
September42 weather score
September is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJanuary to March and December
These months have the strongest weather score in the monthly averages.
