Swellendam Weather in January
Average highs run from 30°C on January 1 to 31°C on January 31, and lows from 16°C to 16°C. Normal precipitation for the month is 31 mm over about 6 wet days.
January day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
January at a glance
- Average high
- 31°C
- Average low
- 16°C
- Precipitation
- 31 mm
- Reanalysis high
- 44°CJan 11, 2018
- Reanalysis low
- 10°CJan 12, 1999
- Daylight
- 14 h 23 min to 13 h 46 min
- Cloud cover
- 32%
- Humidity
- 60%
- Dew point
- 13°C
- Wind
- 17.3 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Jan 1 | 30°C | 16°C | 42°C 2003 | 11°C 2007 | 22% |
| Jan 2 | 30°C | 16°C | 36°C 2010 | 11°C 2001 | 22% |
| Jan 3 | 30°C | 16°C | 42°C 1998 | 12°C 2000 | 22% |
| Jan 4 | 31°C | 16°C | 44°C 1992 | 13°C 2017 | 20% |
| Jan 5 | 31°C | 16°C | 40°C 2010 | 12°C 2013 | 19% |
| Jan 6 | 31°C | 16°C | 38°C 1994 | 13°C 2002 | 20% |
| Jan 7 | 31°C | 16°C | 39°C 2015 | 11°C 2002 | 20% |
| Jan 8 | 31°C | 16°C | 39°C 1999 | 11°C 2000 | 19% |
| Jan 9 | 31°C | 16°C | 35°C 2010 | 11°C 1991 | 18% |
| Jan 10 | 31°C | 16°C | 36°C 2007 | 11°C 1998 | 18% |
| Jan 11 | 31°C | 16°C | 44°C 2018 | 10°C 1998 | 19% |
| Jan 12 | 31°C | 16°C | 37°C 2012 | 10°C 1999 | 19% |
| Jan 13 | 30°C | 16°C | 42°C 2010 | 12°C 1999 | 20% |
| Jan 14 | 30°C | 16°C | 37°C 2020 | 10°C 1998 | 19% |
| Jan 15 | 31°C | 16°C | 42°C 1991 | 12°C 2001 | 18% |
| Jan 16 | 31°C | 16°C | 41°C 2012 | 13°C 2001 | 18% |
| Jan 17 | 31°C | 16°C | 37°C 2010 | 13°C 1991 | 18% |
| Jan 18 | 31°C | 16°C | 43°C 2017 | 12°C 2003 | 18% |
| Jan 19 | 31°C | 16°C | 40°C 2000 | 11°C 1995 | 18% |
| Jan 20 | 31°C | 16°C | 38°C 2000 | 10°C 2019 | 20% |
| Jan 21 | 31°C | 16°C | 39°C 2007 | 12°C 1998 | 19% |
| Jan 22 | 31°C | 16°C | 38°C 1996 | 13°C 1994 | 18% |
| Jan 23 | 31°C | 16°C | 37°C 2015 | 13°C 1994 | 20% |
| Jan 24 | 31°C | 16°C | 41°C 2015 | 13°C 1993 | 21% |
| Jan 25 | 31°C | 16°C | 39°C 2007 | 12°C 1993 | 21% |
| Jan 26 | 31°C | 16°C | 37°C 2007 | 13°C 1993 | 22% |
| Jan 27 | 31°C | 16°C | 39°C 1998 | 13°C 2020 | 22% |
| Jan 28 | 31°C | 16°C | 40°C 2007 | 12°C 1996 | 22% |
| Jan 29 | 31°C | 16°C | 40°C 2015 | 13°C 2017 | 22% |
| Jan 30 | 31°C | 16°C | 39°C 2015 | 13°C 2017 | 21% |
| Jan 31 | 31°C | 16°C | 40°C 2007 | 13°C 1998 | 20% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- January 1
- sunrise 5:30 AM, sunset 7:53 PM
- January 31
- sunrise 5:58 AM, sunset 7:44 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.