Mild
Average highs are around 21°C, so days are mild rather than hot.
Weather Guide
Port St Johns, South Africa Average Monthly Weather
Weather score63Good annual avg
Best months: February, April, January
Across the year, average daytime temperatures are around 23°C, sunshine averages 7.1h per day, and rainfall totals about 1029mm. Sea temperatures average 24°C across the year.
Annual weather
Annual averages
Temp
23°C
Rain
1029mm
Annual total
Sun
7.1h
Sea
24°C
Weather score
63
Good avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 49mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 7.5h per day, enough for a balanced month.
Cool sea
Sea temperatures average 21°C, so the water can feel cool.
Map
Weather map
Compare Port St Johns, South Africa with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August21°C average high
August is cooler than the yearly average, which can make sightseeing feel gentler than in hotter months.
Warmest monthsJanuary to April and December
This stretch sets the upper range for average daytime heat.
Rain
August49mm average rain
August sits on the drier side of Port St Johns' year, which helps with sightseeing and transfers.
Driest monthsMay to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August7.5 hours average sun
August is close to Port St Johns' usual sunshine level, with limited seasonal swing across the year.
Brightest monthsAll year
Sunshine stays consistently strong through the year.
Sea temperature
August21°C average sea
August is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJanuary to April
Sea temperatures are usually near 25°C in this stretch, so swimming comfort is at its strongest.
Weather score
August59 weather score
August scores below Port St Johns' yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJanuary to June and December
These months have the strongest weather score in the monthly averages.
