Swellendam weather in January
In January, Swellendam sees average daytime highs of 28°C and overnight lows near 16°C, with 28 mm of rain across 5.1 wet days and about 14 hours of daylight. It is the 2nd-warmest and 10th-wettest month of the year here.
Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 60% of the time in January, and the air most often feels comfortable.
Daylight stretches from about 14 h 12 min at the start of January to 13 h 42 min by month's end. Set against the rest of the year, January is Swellendam's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Swellendam's year-round climate.
- Daytime high
- 28°
- 2nd warmest
- Overnight low
- 16°
- 11th coldest
- Rainfall
- 28 mm
- 5.1 wet days
- Daylight
- 14 hours
- 5:46 AM – 7:49 PM
- Cloud cover
- 36%
- 2nd clearest
- Wind
- 11 km/h
- 2nd windiest
- Solar energy
- 7.41 kWh/m²
- Travel score
- 7.0
- out of 10
Swellendam is town in Western Cape, South Africa.
- Founded
- 1746
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in January
Day-to-day highs hold fairly steady near 28°C through the month.
A typical January day in Swellendam reaches about 28°C in the afternoon and slips back to 16°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 33°C. Set against its neighbours, January runs about 1°C warmer than December and on par with February.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Avg low (°C) | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 28 | 16 |
| 2 | 28 | 16 |
| 3 | 28 | 16 |
| 4 | 28 | 16 |
| 5 | 28 | 16 |
| 6 | 28 | 16 |
| 7 | 28 | 16 |
| 8 | 28 | 16 |
| 9 | 28 | 16 |
| 10 | 28 | 16 |
| 11 | 28 | 16 |
| 12 | 28 | 16 |
| 13 | 28 | 16 |
| 14 | 28 | 16 |
| 15 | 28 | 16 |
| 16 | 28 | 16 |
| 17 | 28 | 16 |
| 18 | 28 | 16 |
| 19 | 28 | 16 |
| 20 | 28 | 16 |
| 21 | 28 | 16 |
| 22 | 28 | 16 |
| 23 | 28 | 16 |
| 24 | 28 | 16 |
| 25 | 28 | 16 |
| 26 | 28 | 16 |
| 27 | 28 | 16 |
| 28 | 28 | 16 |
| 29 | 28 | 17 |
| 30 | 28 | 17 |
| 31 | 28 | 17 |
Swellendam weather by month
How January compares with the rest of the year at a glance. January is the 2nd-warmest and 10th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 28° / 16° | 28 | 5.1 | 14 | 7.0 |
| Feb | 28° / 16° | 23 | 5.3 | 13.3 | 7.0 |
| Mar | 27° / 15° | 35 | 6 | 12.3 | 7.5 |
| Apr | 24° / 12° | 37 | 6.1 | 11.2 | 7.7 |
| May | 21° / 9° | 30 | 5.4 | 10.3 | 7.5 |
| Jun | 18° / 7° | 31 | 6.1 | 9.8 | 6.9 |
| Jul | 18° / 6° | 33 | 6 | 10 | 6.8 |
| Aug | 19° / 7° | 33 | 6.5 | 10.7 | 6.9 |
| Sep | 21° / 9° | 24 | 5.7 | 11.8 | 7.3 |
| Oct | 23° / 11° | 39 | 5.5 | 12.9 | 7.8 |
| Nov | 25° / 13° | 40 | 5.8 | 13.8 | 7.7 |
| Dec | 27° / 15° | 29 | 5.4 | 14.2 | 7.4 |
Cloud cover in January
The sky is clear or mostly clear about 60% of the time in January.
Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 26%.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 72 | 72 | 72 | 72 | 72 | 73 | 73 | 74 | 74 | 74 | 75 | 75 | 75 | 77 | 77 | 77 | 76 | 76 | 75 | 75 | 75 | 74 | 74 | 73 | 73 | 72 | 72 | 73 | 73 | 73 | 74 |
| Cloudier (%) | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 25 | 23 | 23 | 23 | 24 | 24 | 25 | 25 | 25 | 26 | 26 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 26 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 72 | 28 |
| 2 | 72 | 28 |
| 3 | 72 | 28 |
| 4 | 72 | 28 |
| 5 | 72 | 28 |
| 6 | 73 | 27 |
| 7 | 73 | 27 |
| 8 | 74 | 26 |
| 9 | 74 | 26 |
| 10 | 74 | 26 |
| 11 | 75 | 25 |
| 12 | 75 | 25 |
| 13 | 75 | 25 |
| 14 | 77 | 23 |
| 15 | 77 | 23 |
| 16 | 77 | 23 |
| 17 | 76 | 24 |
| 18 | 76 | 24 |
| 19 | 75 | 25 |
| 20 | 75 | 25 |
| 21 | 75 | 25 |
| 22 | 74 | 26 |
| 23 | 74 | 26 |
| 24 | 73 | 27 |
| 25 | 73 | 27 |
| 26 | 72 | 28 |
| 27 | 72 | 28 |
| 28 | 73 | 27 |
| 29 | 73 | 27 |
| 30 | 73 | 27 |
| 31 | 74 | 26 |
Chance of precipitation in January
Swellendam gets around 28 mm of rain over 5.1 wet days in January. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 17% and peaks near 19% on the wettest days.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 19 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 |
| Rain chance (%) | |
|---|---|
| 1 | 19 |
| 2 | 18 |
| 3 | 18 |
| 4 | 18 |
| 5 | 18 |
| 6 | 17 |
| 7 | 17 |
| 8 | 17 |
| 9 | 17 |
| 10 | 16 |
| 11 | 16 |
| 12 | 16 |
| 13 | 16 |
| 14 | 15 |
| 15 | 15 |
| 16 | 15 |
| 17 | 15 |
| 18 | 15 |
| 19 | 15 |
| 20 | 15 |
| 21 | 16 |
| 22 | 16 |
| 23 | 16 |
| 24 | 17 |
| 25 | 17 |
| 26 | 17 |
| 27 | 18 |
| 28 | 18 |
| 29 | 18 |
| 30 | 18 |
| 31 | 18 |
Humidity in January
Most of January feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the comfortable band about 41% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 44 | 43 | 43 | 43 | 43 | 43 | 42 | 42 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 42 | 41 | 41 | 39 | 38 | 37 | 36 | 35 | 34 | 33 | 32 | 31 | 31 | 30 | 29 | 29 |
| Comfortable (%) | 38 | 38 | 38 | 38 | 39 | 39 | 39 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 39 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 48 | 49 | 49 |
| Humid (%) | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 44 | 38 | 18 | 0 |
| 2 | 43 | 38 | 18 | 0 |
| 3 | 43 | 38 | 18 | 0 |
| 4 | 43 | 38 | 18 | 0 |
| 5 | 43 | 39 | 18 | 0 |
| 6 | 43 | 39 | 18 | 1 |
| 7 | 42 | 39 | 18 | 1 |
| 8 | 42 | 38 | 18 | 1 |
| 9 | 43 | 38 | 18 | 1 |
| 10 | 43 | 38 | 18 | 1 |
| 11 | 43 | 38 | 18 | 1 |
| 12 | 43 | 38 | 18 | 2 |
| 13 | 43 | 38 | 17 | 2 |
| 14 | 43 | 38 | 17 | 2 |
| 15 | 43 | 38 | 17 | 2 |
| 16 | 42 | 38 | 17 | 3 |
| 17 | 41 | 38 | 18 | 3 |
| 18 | 41 | 39 | 18 | 3 |
| 19 | 39 | 39 | 18 | 3 |
| 20 | 38 | 40 | 18 | 3 |
| 21 | 37 | 41 | 19 | 3 |
| 22 | 36 | 42 | 19 | 3 |
| 23 | 35 | 43 | 19 | 3 |
| 24 | 34 | 44 | 19 | 3 |
| 25 | 33 | 45 | 19 | 3 |
| 26 | 32 | 46 | 19 | 3 |
| 27 | 31 | 47 | 19 | 3 |
| 28 | 31 | 48 | 19 | 3 |
| 29 | 30 | 48 | 19 | 3 |
| 30 | 29 | 49 | 19 | 3 |
| 31 | 29 | 49 | 19 | 3 |
Wind in January
Winds average 11 km/h in January.
Across January, daily wind ranges from about 11 km/h on the calmest days to 11 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| 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 | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 11 | calm |
| 2 | 11 | calm |
| 3 | 11 | calm |
| 4 | 11 | calm |
| 5 | 11 | calm |
| 6 | 11 | calm |
| 7 | 11 | calm |
| 8 | 11 | calm |
| 9 | 11 | calm |
| 10 | 11 | calm |
| 11 | 11 | calm |
| 12 | 11 | calm |
| 13 | 11 | calm |
| 14 | 11 | calm |
| 15 | 11 | calm |
| 16 | 11 | calm |
| 17 | 11 | calm |
| 18 | 11 | calm |
| 19 | 11 | calm |
| 20 | 11 | calm |
| 21 | 11 | calm |
| 22 | 11 | calm |
| 23 | 11 | calm |
| 24 | 11 | calm |
| 25 | 11 | calm |
| 26 | 11 | calm |
| 27 | 11 | calm |
| 28 | 11 | calm |
| 29 | 11 | calm |
| 30 | 11 | calm |
| 31 | 11 | calm |
Sunrise & sunset in January
Daylight runs from about 14 h 12 min at the start of January to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 30 minutes over January. Sunrise moves from 5:34 AM to 6:01 AM, and sunset from 7:48 PM to 7:43 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.9 | 13.9 | 13.9 | 13.9 | 13.8 | 13.8 | 13.8 | 13.8 | 13.8 | 13.7 | 13.7 |
| Sunrise (AM) | 5:34 | 5:35 | 5:36 | 5:37 | 5:37 | 5:38 | 5:39 | 5:40 | 5:40 | 5:41 | 5:42 | 5:43 | 5:44 | 5:45 | 5:46 | 5:46 | 5:47 | 5:48 | 5:49 | 5:50 | 5:51 | 5:52 | 5:53 | 5:54 | 5:55 | 5:56 | 5:57 | 5:58 | 5:59 | 6:00 | 6:01 |
| Sunset (PM) | 7:48 | 7:49 | 7:49 | 7:49 | 7:49 | 7:49 | 7:49 | 7:49 | 7:49 | 7:49 | 7:49 | 7:49 | 7:49 | 7:49 | 7:49 | 7:49 | 7:48 | 7:48 | 7:48 | 7:48 | 7:47 | 7:47 | 7:47 | 7:46 | 7:46 | 7:45 | 7:45 | 7:44 | 7:44 | 7:43 | 7:43 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.2 | 5:34 | 7:48 |
| 2 | 14.2 | 5:35 | 7:49 |
| 3 | 14.2 | 5:36 | 7:49 |
| 4 | 14.2 | 5:37 | 7:49 |
| 5 | 14.2 | 5:37 | 7:49 |
| 6 | 14.2 | 5:38 | 7:49 |
| 7 | 14.2 | 5:39 | 7:49 |
| 8 | 14.2 | 5:40 | 7:49 |
| 9 | 14.1 | 5:40 | 7:49 |
| 10 | 14.1 | 5:41 | 7:49 |
| 11 | 14.1 | 5:42 | 7:49 |
| 12 | 14.1 | 5:43 | 7:49 |
| 13 | 14.1 | 5:44 | 7:49 |
| 14 | 14.1 | 5:45 | 7:49 |
| 15 | 14.1 | 5:46 | 7:49 |
| 16 | 14.0 | 5:46 | 7:49 |
| 17 | 14.0 | 5:47 | 7:48 |
| 18 | 14.0 | 5:48 | 7:48 |
| 19 | 14.0 | 5:49 | 7:48 |
| 20 | 14.0 | 5:50 | 7:48 |
| 21 | 13.9 | 5:51 | 7:47 |
| 22 | 13.9 | 5:52 | 7:47 |
| 23 | 13.9 | 5:53 | 7:47 |
| 24 | 13.9 | 5:54 | 7:46 |
| 25 | 13.8 | 5:55 | 7:46 |
| 26 | 13.8 | 5:56 | 7:45 |
| 27 | 13.8 | 5:57 | 7:45 |
| 28 | 13.8 | 5:58 | 7:44 |
| 29 | 13.8 | 5:59 | 7:44 |
| 30 | 13.7 | 6:00 | 7:43 |
| 31 | 13.7 | 6:01 | 7:43 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 7.41 kWh/m².
For context, solar energy here swings from a low near 2.64 kWh/m² to a high of 7.53 kWh/m² in December across the year — January's 7.41 kWh/m² sits near the top of that range.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 7.6 | 7.6 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.4 | 7.4 | 7.4 | 7.4 | 7.3 | 7.3 | 7.3 | 7.2 | 7.2 | 7.2 | 7.2 | 7.1 | 7.1 | 7.1 | 7.0 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 7.6 | Intense |
| 2 | 7.6 | Intense |
| 3 | 7.5 | Intense |
| 4 | 7.5 | Intense |
| 5 | 7.5 | Intense |
| 6 | 7.5 | Intense |
| 7 | 7.5 | Intense |
| 8 | 7.5 | Intense |
| 9 | 7.5 | Intense |
| 10 | 7.5 | Intense |
| 11 | 7.5 | Intense |
| 12 | 7.5 | Intense |
| 13 | 7.5 | Intense |
| 14 | 7.5 | Intense |
| 15 | 7.5 | Intense |
| 16 | 7.5 | Intense |
| 17 | 7.4 | Intense |
| 18 | 7.4 | Intense |
| 19 | 7.4 | Intense |
| 20 | 7.4 | Intense |
| 21 | 7.3 | Intense |
| 22 | 7.3 | Intense |
| 23 | 7.3 | Intense |
| 24 | 7.2 | Intense |
| 25 | 7.2 | Intense |
| 26 | 7.2 | Intense |
| 27 | 7.2 | Intense |
| 28 | 7.1 | Intense |
| 29 | 7.1 | Intense |
| 30 | 7.1 | Intense |
| 31 | 7.0 | Intense |
Is January a good time to visit Swellendam?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is one of the better times to visit Swellendam for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Swellendam in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, Swellendam sees daytime highs around 28°C and nights near 16°C. Pack light clothes and sun protection. About 5 days see rain.
Sea temperature near Swellendam in January
The nearest coast averages about 21°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 56 km away) is warmest in February at about 22°C and coldest in July near 15°C.
It's comfortable for a long swim from Dec 15 to Mar 26 — about 3.4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 21 | 22 | 21 | 19 | 17 | 16 | 15 | 15 | 16 | 17 | 19 | 20 |
| Comfort | Refreshing | Refreshing | Refreshing | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 21 | Refreshing |
| Feb | 22 | Refreshing |
| Mar | 21 | Refreshing |
| Apr | 19 | Cool |
| May | 17 | Cool |
| Jun | 16 | Cool |
| Jul | 15 | Cool |
| Aug | 15 | Cool |
| Sep | 16 | Cool |
| Oct | 17 | Cool |
| Nov | 19 | Cool |
| Dec | 20 | Refreshing |
UV index in Swellendam in January
Clear-sky midday UV in January peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Swellendam peaks around January 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 14 | 10 | 10 | 6 | 4 | 3 | 3 | 4 | 6 | 10 | 12 | 12 |
| Level | Extreme | Very high | Very high | High | Moderate | Moderate | Moderate | Moderate | High | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 10 | Very high |
| Mar | 10 | Very high |
| Apr | 6 | High |
| May | 4 | Moderate |
| Jun | 3 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 6 | High |
| Oct | 10 | Extreme |
| Nov | 12 | Extreme |
| Dec | 12 | Extreme |
Air quality in Swellendam in January
Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.
Air quality in Swellendam is worst in June — around 17 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (January, 6 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 6 | 8 | 9 | 10 | 16 | 17 | 17 | 16 | 13 | 9 | 7 | 8 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 6 | Good |
| Feb | 8 | Good |
| Mar | 9 | Good |
| Apr | 10 | Good |
| May | 16 | Moderate |
| Jun | 17 | Moderate |
| Jul | 17 | Moderate |
| Aug | 16 | Moderate |
| Sep | 13 | Moderate |
| Oct | 9 | Good |
| Nov | 7 | Good |
| Dec | 8 | Good |
Where is Swellendam?
Swellendam sits at 34.0°S, 20.4°E, 128 m above sea level, in South Africa. The nearest listed city is Montagu, 40 km away.
Topography around Swellendam
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Swellendam.
Within 3 km, the terrain around Swellendam has only modest variations in elevation — a maximum elevation change of 248 m around an average of 163 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,677 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,683 m.
The land around Swellendam is covered by trees (28%), grassland (25%) and shrubs (24%) within 3 km, grassland (33%), cropland (31%) and shrubs (24%) within 16 km, and grassland (38%), shrubs (27%) and cropland (22%) 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 Swellendam (-34.0226°, 20.4417°, elevation 128 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).