Knysna in september: average Weather, Temperature and Climate
Weather in Knysna in september 2025
The weather in Knysna in the month of september comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather
Weather at 6am
61°F
Clear/Sunny
55% of time
19%
14%
8%
Weather at 12pm
67°F
Clear/Sunny
54% of time
23%
16%
6%
Weather at 6pm
61°F
Clear/Sunny
51% of time
22%
16%
8%
Weather at 3am
59°F
52%
20%
17%
9%
Evolution of daily average temperature and precipitation in Knysna in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Knysna in september.
The climate of Knysna in september is good
In september in Knysna, the climate is rather dry (with 2.5in of rainfall over 3 days). The weather is better from the previous month since in august it receives an average of 3in of rainfall over 4 days.
The climate quite enjoyable around this city the month of september. The high seasonal norm is 67°F. The seasonal minimum is 61°F. Thus, the mean temperature average in september in Knysna is 65°F. Note that seasonal normals are in contrast with those observed in Knysna in september with a maximum record of 88°F in 2019 and a minimum record of 50°F in 2009. You can hope to have about 20 days with temperatures up to 65°F, or 67% of the month.
On this month of september, day length in Knysna is generally 11:52. Sunrise is at 06:27 and sets at 18:19.
With a good climate, this month is a good month to go there.
Seasonal average climate and temperature of Knysna in september
Check below seasonal norms These statistics are generated from the weather statements earlier years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 65°F | ||||
| Highest temperature | 67°F | ||||
| Lowest temperature | 61°F | ||||
| Highest record temperature | 88°F (2019) | ||||
| Lowest record temperature | 50°F (2009) | ||||
| Number of days at +65°F | 20 day(s) (67%) | ||||
| Sea temperature | |||||
| Average sea temperature | 63°F | ||||
| Lowest sea temperature | 61°F | ||||
| Highest sea temperature | 65°F | ||||
| Wind | |||||
| Wind speed | 22km/h | ||||
| Wind temperature | 59°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 2.5in | ||||
| Number of days with rainfall | 3 day(s) (10%) | ||||
| Record daily rainfall | 4.3in (2018) | ||||
| Other climate data | |||||
| Humidity | 75% | ||||
| Visibility | 9.67km | ||||
| Cloud cover | 29% | ||||
| UV index | 5 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:27 | ||||
| Time of sunset | 18:19 | ||||
| Length of day | 11:52 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Knysna in september 2024:
54°F to 61°F
58°F to 72°F
63°F to 68°F
58°F to 61°F
54°F to 56°F
49°F to 58°F
54°F to 59°F
54°F to 56°F
54°F to 58°F
52°F to 61°F
56°F to 63°F
58°F to 67°F
54°F to 63°F
54°F to 63°F
56°F to 63°F
58°F to 61°F
54°F to 63°F
54°F to 67°F
56°F to 58°F
54°F to 59°F
54°F to 63°F
58°F to 65°F
59°F to 70°F
61°F to 70°F
61°F to 67°F
58°F to 65°F
59°F to 65°F
59°F to 61°F
52°F to 59°F
52°F to 54°F
Map: other cities in South Africa in september
Cities near Knysna:
| Plettenberg Bay in september | good weather |
| Wilderness in september | good weather |
| Garden Route National Park in september | good weather |
| George in september | good weather |
| Mossel Bay in september | good weather |
| Oudtshoorn in september | good weather |
| Still Bay in september | good weather |
| Groot-Jongensfontein in september | good weather |
| St Francis Bay in september | good weather |
| Jeffrey's Bay in september | good weather |
| Karoo National Park in september | good weather |
| Witsand in september | good weather |
Click over cities on the map for information about the weather in september.
Knysna
perfect weather
good
tolerable
bad
very bad
Weather data for Knysna in september:
Weather data for Knysna for september are derived from an average of the weather forecast since 2009 in Knysna. There is a margin of error and these forecasts are to be considered as general information only. The weather in Knysna can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Knysna.