Graaff Reinet weather in September
In September, Graaff Reinet sees average daytime highs of 23°C and overnight lows near 8°C, with 27 mm of precipitation across 4.3 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 8th-wettest month of the year here.
Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 57% of the time in September, and the air most often feels dry.
Daylight stretches from about 11 h 18 min at the start of September to 12 h 18 min by month's end. Set against the rest of the year, September is Graaff Reinet's 6th-clearest and 8th-windiest month. For the whole year in context, see Graaff Reinet's year-round climate.
- Daytime high
- 23°
- 8th warmest
- Overnight low
- 8°
- 5th coldest
- Precipitation
- 27 mm
- 4.3 wet days
- Daylight
- 11 h 48 min
- 6:22 AM – 6:10 PM
- Cloud cover
- 37%
- 6th clearest
- Wind
- 10 km/h
- 8th windiest
- Solar energy
- 5.52 kWh/m²
- Travel score
- 8.0
- out of 10
Graaff Reinet is town in the Eastern Cape, South Africa.
- Density
- 309/km²
- people per km²
- Founded
- 1786
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Day-to-day highs hold fairly steady near 23°C through the month.
A typical September day in Graaff Reinet reaches about 23°C in the afternoon and slips back to 8°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 30°C. Set against its neighbours, September runs about 3°C warmer than August and about 2°C cooler than October.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
| Avg low (°C) | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 21 | 7 |
| 2 | 22 | 7 |
| 3 | 22 | 7 |
| 4 | 22 | 7 |
| 5 | 22 | 7 |
| 6 | 22 | 8 |
| 7 | 22 | 8 |
| 8 | 22 | 8 |
| 9 | 22 | 8 |
| 10 | 22 | 8 |
| 11 | 22 | 8 |
| 12 | 22 | 8 |
| 13 | 22 | 8 |
| 14 | 22 | 8 |
| 15 | 23 | 8 |
| 16 | 23 | 8 |
| 17 | 23 | 8 |
| 18 | 23 | 8 |
| 19 | 23 | 8 |
| 20 | 23 | 8 |
| 21 | 23 | 8 |
| 22 | 23 | 8 |
| 23 | 23 | 8 |
| 24 | 23 | 8 |
| 25 | 23 | 9 |
| 26 | 23 | 9 |
| 27 | 23 | 9 |
| 28 | 23 | 9 |
| 29 | 23 | 9 |
| 30 | 23 | 9 |
Graaff Reinet weather by month
How September compares with the rest of the year at a glance. September is the 8th-warmest and 8th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 29° / 16° | 71 | 9.7 | 13.9 | 5.7 |
| Feb | 29° / 16° | 63 | 10.1 | 13.2 | 5.6 |
| Mar | 27° / 14° | 64 | 9.2 | 12.2 | 6.8 |
| Apr | 24° / 11° | 35 | 6.7 | 11.2 | 7.7 |
| May | 21° / 8° | 18 | 3.7 | 10.4 | 7.9 |
| Jun | 18° / 5° | 16 | 3.3 | 9.9 | 7.5 |
| Jul | 18° / 4° | 17 | 3.3 | 10.1 | 7.5 |
| Aug | 20° / 6° | 22 | 4.3 | 10.8 | 7.6 |
| Sep | 23° / 8° | 27 | 4.3 | 11.8 | 8.0 |
| Oct | 25° / 10° | 41 | 7.2 | 12.8 | 7.7 |
| Nov | 26° / 12° | 53 | 7.5 | 13.7 | 7.3 |
| Dec | 29° / 14° | 57 | 8.2 | 14.1 | 6.4 |
Cloud cover in September
The sky is clear or mostly clear about 57% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 29%. Skies tend to cloud over as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 76 | 75 | 75 | 75 | 74 | 74 | 73 | 72 | 72 | 72 | 70 | 70 | 70 | 69 | 69 | 69 | 69 | 69 | 69 | 69 | 69 | 68 | 68 | 69 | 69 | 69 | 69 | 68 | 68 | 68 |
| Cloudier (%) | 24 | 25 | 25 | 25 | 26 | 26 | 27 | 28 | 28 | 28 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 31 | 31 | 31 | 31 | 32 | 32 | 32 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 76 | 24 |
| 2 | 75 | 25 |
| 3 | 75 | 25 |
| 4 | 75 | 25 |
| 5 | 74 | 26 |
| 6 | 74 | 26 |
| 7 | 73 | 27 |
| 8 | 72 | 28 |
| 9 | 72 | 28 |
| 10 | 72 | 28 |
| 11 | 70 | 30 |
| 12 | 70 | 30 |
| 13 | 70 | 30 |
| 14 | 69 | 31 |
| 15 | 69 | 31 |
| 16 | 69 | 31 |
| 17 | 69 | 31 |
| 18 | 69 | 31 |
| 19 | 69 | 31 |
| 20 | 69 | 31 |
| 21 | 69 | 31 |
| 22 | 68 | 32 |
| 23 | 68 | 32 |
| 24 | 69 | 31 |
| 25 | 69 | 31 |
| 26 | 69 | 31 |
| 27 | 69 | 31 |
| 28 | 68 | 32 |
| 29 | 68 | 32 |
| 30 | 68 | 32 |
Chance of precipitation in September
Graaff Reinet gets around 27 mm of rain and snow over 4.3 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 15% and peaks near 18% on the wettest days, and about 0 day brings snow.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 14 | 14 | 15 | 15 | 15 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 |
| Rain chance (%) | |
|---|---|
| 1 | 12 |
| 2 | 12 |
| 3 | 12 |
| 4 | 12 |
| 5 | 12 |
| 6 | 12 |
| 7 | 12 |
| 8 | 12 |
| 9 | 12 |
| 10 | 13 |
| 11 | 13 |
| 12 | 13 |
| 13 | 14 |
| 14 | 14 |
| 15 | 15 |
| 16 | 15 |
| 17 | 15 |
| 18 | 16 |
| 19 | 16 |
| 20 | 17 |
| 21 | 17 |
| 22 | 17 |
| 23 | 17 |
| 24 | 17 |
| 25 | 17 |
| 26 | 17 |
| 27 | 17 |
| 28 | 17 |
| 29 | 18 |
| 30 | 18 |
Humidity in September
Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 100 | 100 |
| Comfortable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 100 | 0 |
| 2 | 100 | 0 |
| 3 | 100 | 0 |
| 4 | 100 | 0 |
| 5 | 100 | 0 |
| 6 | 100 | 0 |
| 7 | 100 | 0 |
| 8 | 100 | 0 |
| 9 | 100 | 0 |
| 10 | 100 | 0 |
| 11 | 100 | 0 |
| 12 | 100 | 0 |
| 13 | 99 | 1 |
| 14 | 99 | 1 |
| 15 | 99 | 1 |
| 16 | 99 | 1 |
| 17 | 99 | 1 |
| 18 | 99 | 1 |
| 19 | 99 | 1 |
| 20 | 99 | 1 |
| 21 | 99 | 1 |
| 22 | 99 | 1 |
| 23 | 99 | 1 |
| 24 | 99 | 1 |
| 25 | 99 | 1 |
| 26 | 99 | 1 |
| 27 | 99 | 1 |
| 28 | 99 | 1 |
| 29 | 100 | 0 |
| 30 | 100 | 0 |
Wind in September
Winds average 10 km/h in September.
Across September, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 10 | calm |
| 2 | 10 | calm |
| 3 | 10 | calm |
| 4 | 10 | calm |
| 5 | 10 | calm |
| 6 | 10 | calm |
| 7 | 10 | calm |
| 8 | 10 | calm |
| 9 | 10 | calm |
| 10 | 10 | calm |
| 11 | 10 | calm |
| 12 | 10 | calm |
| 13 | 10 | calm |
| 14 | 10 | calm |
| 15 | 10 | calm |
| 16 | 10 | calm |
| 17 | 10 | calm |
| 18 | 10 | calm |
| 19 | 10 | calm |
| 20 | 10 | calm |
| 21 | 10 | calm |
| 22 | 10 | calm |
| 23 | 10 | calm |
| 24 | 10 | calm |
| 25 | 10 | calm |
| 26 | 10 | calm |
| 27 | 10 | calm |
| 28 | 10 | calm |
| 29 | 10 | calm |
| 30 | 10 | calm |
Sunrise & sunset in September
Daylight runs from about 11 h 18 min at the start of September to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 60 minutes over September. Sunrise moves from 6:42 AM to 6:03 AM, and sunset from 6:01 PM to 6:20 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.3 | 11.3 | 11.4 | 11.4 | 11.4 | 11.5 | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 | 12.2 | 12.3 |
| Sunrise (AM) | 6:42 | 6:41 | 6:40 | 6:38 | 6:37 | 6:36 | 6:34 | 6:33 | 6:32 | 6:30 | 6:29 | 6:28 | 6:26 | 6:25 | 6:23 | 6:22 | 6:21 | 6:19 | 6:18 | 6:16 | 6:15 | 6:14 | 6:12 | 6:11 | 6:10 | 6:08 | 6:07 | 6:06 | 6:04 | 6:03 |
| Sunset (PM) | 6:01 | 6:01 | 6:02 | 6:03 | 6:03 | 6:04 | 6:05 | 6:05 | 6:06 | 6:07 | 6:07 | 6:08 | 6:08 | 6:09 | 6:10 | 6:10 | 6:11 | 6:12 | 6:12 | 6:13 | 6:14 | 6:14 | 6:15 | 6:16 | 6:16 | 6:17 | 6:18 | 6:18 | 6:19 | 6:20 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.3 | 6:42 | 6:01 |
| 2 | 11.3 | 6:41 | 6:01 |
| 3 | 11.4 | 6:40 | 6:02 |
| 4 | 11.4 | 6:38 | 6:03 |
| 5 | 11.4 | 6:37 | 6:03 |
| 6 | 11.5 | 6:36 | 6:04 |
| 7 | 11.5 | 6:34 | 6:05 |
| 8 | 11.5 | 6:33 | 6:05 |
| 9 | 11.6 | 6:32 | 6:06 |
| 10 | 11.6 | 6:30 | 6:07 |
| 11 | 11.6 | 6:29 | 6:07 |
| 12 | 11.7 | 6:28 | 6:08 |
| 13 | 11.7 | 6:26 | 6:08 |
| 14 | 11.7 | 6:25 | 6:09 |
| 15 | 11.8 | 6:23 | 6:10 |
| 16 | 11.8 | 6:22 | 6:10 |
| 17 | 11.8 | 6:21 | 6:11 |
| 18 | 11.9 | 6:19 | 6:12 |
| 19 | 11.9 | 6:18 | 6:12 |
| 20 | 11.9 | 6:16 | 6:13 |
| 21 | 12.0 | 6:15 | 6:14 |
| 22 | 12.0 | 6:14 | 6:14 |
| 23 | 12.0 | 6:12 | 6:15 |
| 24 | 12.1 | 6:11 | 6:16 |
| 25 | 12.1 | 6:10 | 6:16 |
| 26 | 12.1 | 6:08 | 6:17 |
| 27 | 12.2 | 6:07 | 6:18 |
| 28 | 12.2 | 6:06 | 6:18 |
| 29 | 12.2 | 6:04 | 6:19 |
| 30 | 12.3 | 6:03 | 6:20 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 5.52 kWh/m².
For context, solar energy here swings from a low near 3.08 kWh/m² to a high of 7.97 kWh/m² in December across the year — September's 5.52 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.9 | 5.0 | 5.0 | 5.0 | 5.1 | 5.1 | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.6 | 5.6 | 5.7 | 5.7 | 5.8 | 5.8 | 5.8 | 5.9 | 5.9 | 6.0 | 6.0 | 6.0 | 6.1 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.9 | Bright |
| 2 | 5.0 | Bright |
| 3 | 5.0 | Bright |
| 4 | 5.0 | Bright |
| 5 | 5.1 | Bright |
| 6 | 5.1 | Bright |
| 7 | 5.2 | Bright |
| 8 | 5.2 | Bright |
| 9 | 5.2 | Bright |
| 10 | 5.3 | Bright |
| 11 | 5.3 | Bright |
| 12 | 5.3 | Bright |
| 13 | 5.4 | Bright |
| 14 | 5.4 | Bright |
| 15 | 5.5 | Bright |
| 16 | 5.5 | Bright |
| 17 | 5.5 | Bright |
| 18 | 5.6 | Bright |
| 19 | 5.6 | Bright |
| 20 | 5.7 | Bright |
| 21 | 5.7 | Bright |
| 22 | 5.8 | Bright |
| 23 | 5.8 | Bright |
| 24 | 5.8 | Bright |
| 25 | 5.9 | Bright |
| 26 | 5.9 | Bright |
| 27 | 6.0 | Bright |
| 28 | 6.0 | Bright |
| 29 | 6.0 | Intense |
| 30 | 6.1 | Intense |
Is September a good time to visit Graaff Reinet?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is one of the better times to visit Graaff Reinet for general sightseeing.
What to pack for Graaff Reinet in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Graaff Reinet sees daytime highs around 23°C and nights near 8°C. Worth packing: light clothes and sun protection. About 4 days see rain.
UV index in Graaff Reinet in September
Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Graaff Reinet peaks around January 14 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 14 | 12 | 10 | 6 | 5 | 3 | 4 | 5 | 7 | 11 | 12 | 13 |
| Level | Extreme | Extreme | Very high | High | Moderate | Moderate | Moderate | High | High | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 12 | Extreme |
| Mar | 10 | Very high |
| Apr | 6 | High |
| May | 5 | Moderate |
| Jun | 3 | Moderate |
| Jul | 4 | Moderate |
| Aug | 5 | High |
| Sep | 7 | High |
| Oct | 11 | Extreme |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Where is Graaff Reinet?
Graaff Reinet sits at 32.3°S, 24.5°E, 756 m above sea level, in South Africa. The nearest listed city is Middelburg, 96 km away.
Topography around Graaff Reinet
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Graaff Reinet.
Within 3 km, the terrain around Graaff Reinet has large variations in elevation — a maximum elevation change of 631 m around an average of 857 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 969 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,048 m.
The land around Graaff Reinet is covered by shrubs (49%) within 3 km, grassland (56%) and shrubs (36%) within 16 km, and grassland (79%) within 80 km.
South Africa travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / M / N
- 230 V · 50 Hz
- Prices
- ≈ 41% of US
- price level, 2025
- GDP per capita
- $6,598
- 2025
- Happiness
- 5.0 / 10
- World Happiness, 2025
- Safe drinking water
- 68%
- of population, 2024
- Homicide rate
- 43.7
- per 100k, 2022
- Road deaths
- 22.2
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Very high
- EF EPI 602
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Graaff Reinet (-32.2522°, 24.5308°, elevation 756 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).