De Aar in Summer
In summer (December, January and February), De Aar sees average daytime highs around 31°C and overnight lows near 17°C, with 140 mm of rain over about 20 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 31°C. The sky is clear or mostly clear about 68% of the time across summer, and the air most often feels dry.
Summer is De Aar's weakest season of the year to visit on our travel score. For the whole year in context, see De Aar's year-round climate.
- Avg daytime high
- 31°C
- warmest season of the year
- Avg overnight low
- 17°C
- Rainfall
- 140 mm
- 20 wet days
- Avg wind
- 16 km/h
- Travel score
- 5.3
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in De Aar in Summer
Across summer, daytime highs hold fairly steady around 31°C.
A typical summer day in De Aar reaches about 31°C and drops to 17°C overnight. The warmest of the three months is January, the coolest December.
How summer really feels in De Aar
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
De Aar weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 31° / 17° | 56 | 7.2 | 13.8 | 5.0 |
| Feb | 31° / 17° | 47 | 7.7 | 13.1 | 5.2 |
| Mar | 28° / 15° | 48 | 7 | 12.2 | 6.7 |
| Apr | 24° / 11° | 31 | 5 | 11.3 | 8.1 |
| May | 20° / 7° | 19 | 3.1 | 10.5 | 7.8 |
| Jun | 17° / 3° | 14 | 2.5 | 10.1 | 6.7 |
| Jul | 17° / 2° | 10 | 2.1 | 10.2 | 6.8 |
| Aug | 19° / 4° | 11 | 2.3 | 10.9 | 7.8 |
| Sep | 23° / 8° | 14 | 2.1 | 11.8 | 8.6 |
| Oct | 26° / 11° | 24 | 3.7 | 12.8 | 8.2 |
| Nov | 28° / 13° | 33 | 4.6 | 13.6 | 7.2 |
| Dec | 31° / 16° | 37 | 5.2 | 13.9 | 5.6 |
Cloud cover in Summer
The sky is clear or mostly clear about 68% of the time across summer.
Chance of precipitation in Summer
De Aar gets around 140 mm of rain over 20 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 16 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 48 min in early December to 12 h 42 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 8.0 kWh/m².
Is summer a good time to visit De Aar?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit De Aar for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for De Aar in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, De Aar sees daytime highs around 31°C and nights near 17°C. Pack light clothes and sun protection. About 20 days see rain.
UV index in De Aar in Summer
Clear-sky midday UV across summer averages 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 De Aar peaks around January 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 4 (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) | 15 | 13 | 11 | 7 | 5 | 4 | 4 | 6 | 8 | 12 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | High | High | Moderate | Moderate | High | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 13 | Extreme |
| Mar | 11 | Extreme |
| Apr | 7 | High |
| May | 5 | High |
| Jun | 4 | Moderate |
| Jul | 4 | Moderate |
| Aug | 6 | High |
| Sep | 8 | Very high |
| Oct | 12 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Where is De Aar?
De Aar sits at 30.6°S, 24.0°E, 1,247 m above sea level, in South Africa. The nearest listed city is Middelburg, 133 km away.
Topography around De Aar
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of De Aar.
Within 3 km, the terrain around De Aar has only modest variations in elevation — a maximum elevation change of 132 m around an average of 1,251 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 348 m; within 80 km, large variations in elevation — a maximum elevation change of 918 m.
The land around De Aar is covered by grassland (50%) and artificial surfaces (25%) within 3 km, grassland (83%) within 16 km, and grassland (89%) 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 De Aar (-30.6497°, 24.0123°, elevation 1,247 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.