Western Cape · South Africa
Knysna in September
In September, Knysna averages a daytime high of 19 °C and a night-time low of 11 °C, with about 72 mm of rain over the month. By the measure used here it is one of the most comfortable months to visit; they run September and December to July.
- Average high
- 19 °C
- Average low
- 11 °C
- Rain in the month
- 72 mm
- Daylight on 15 Sep
- 12 h
- Comfortable month
- Yes
- Places to stay
- 80
When to go
How September compares with the rest of the year in Knysna
September is tied for the coolest month in Knysna by average daytime high; across the year the highs run from 19 °C to 25 °C and the lows from 10 °C to 17 °C. By day, September is 1 °C warmer than August, and October is 1 °C warmer than September.
September brings 72 mm of rain, more than the monthly average of 72 mm (860 mm a year); it is tied for the 5th wettest month.
On 15 September the sun is up for about 12 h, against 9 h 50 min at the shortest and 14 h 20 min at the longest point of the year (calculated from the latitude, sunrise to sunset).
| Month | High | Low | Rain | Comfortable |
|---|---|---|---|---|
| January | 24 °C | 17 °C | 69 mm | Yes |
| February | 25 °C | 17 °C | 61 mm | Yes |
| March | 24 °C | 16 °C | 74 mm | Yes |
| April | 23 °C | 14 °C | 65 mm | Yes |
| May | 21 °C | 13 °C | 60 mm | Yes |
| June | 20 °C | 11 °C | 59 mm | Yes |
| July | 19 °C | 10 °C | 71 mm | Yes |
| August | 19 °C | 10 °C | 84 mm | |
| September | 19 °C | 11 °C | 72 mm | Yes |
| October | 21 °C | 13 °C | 91 mm | |
| November | 21 °C | 14 °C | 82 mm | |
| December | 23 °C | 15 °C | 72 mm | Yes |
Comfortable means average daytime high between 18 °C and 29 °C and under 80 mm of rain in the month. Averages for 1991–2020 over the surrounding area, a grid square about 50 km across, so a coast or a nearby mountain can make the town itself warmer or cooler. Data: CRU TS v4.10, Climatic Research Unit, University of East Anglia (Open Database License).
When to go
Is September a good time to visit Knysna?
Yes, by the measure used here: in September the average high of 19 °C is between 18 °C and 29 °C and the 72 mm of rain is under 80 mm. The comfortable months in Knysna are September and December to July.
The measure is about weather for a city stay only; it says nothing about events, school holidays or prices.
Public holidays in South Africa in September
Nationwide public holidays; shops and offices may close on these dates.
When to go
Destinations near Knysna that are comfortable in September
Within 300 km, nearest first, by the same measure.
Where to stay
Where to stay in Knysna
This guide lists 80 places to stay in Knysna, hotels recorded in Wikidata. By straight-line distance from the centre: under 1 km, 10; 1–3 km, 28; 3–10 km, 33; 10 km or more, 9.
Sources: climate from CRU TS v4.10 (Climatic Research Unit, University of East Anglia; Open Database License), 1991–2020 averages; day length calculated from the latitude; public holidays from the OpenHolidays API (ODbL); places to stay from each operator's own public pages and Wikidata. How this guide is made.