Climate and average weather in De Aar
In De Aar, the summers are hot, fairly dry, and mostly clear and the winters are mild and clear.
Over the course of the year, the temperature in De Aar typically varies from 2°C to 31°C, and is rarely below -2°C or above 36°C. January is the hottest month of the year, while June is the coldest.
Based on the travel score, the best times of year to visit De Aar for warm-weather activities are from late March to early June and late July to late November.
- Hottest
- Jan
- 31°
- Coldest
- Jun
- 3°
- Wettest
- Jan
- 56 mm
- Driest
- Jul
- 10 mm
- Rain / yr
- 343 mm
- 53 wet days
- Daylight
- 10.0–14.0 h
- shortest–longest
- Elevation
- 1,247 m
- 30.6°S
- Clearest
- Jul
- 21% cloud
De Aar is town in the Northern Cape, South Africa.
- Density
- 378/km²
- people per km²
- Founded
- 1903
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
De Aar weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around late July to late November.
Temperature through the year
Daily average highs and lows in De Aar, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 4.4 months, from November 8 to March 20, with daily high temperatures above 28°C. The hottest month of the year in De Aar is January, with an average high of 31°C and low of 17°C.
The cool season lasts 3.0 months, from May 23 to August 21, with daily high temperatures below 19°C. The coldest month of the year in De Aar is June, with an average low of 3°C and high of 17°C.
Days typically run about 14°C warmer than nights year-round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 31 | 28 | 24 | 20 | 17 | 17 | 19 | 23 | 26 | 28 | 31 |
| Avg low (°C) | 17 | 17 | 15 | 11 | 7 | 3 | 2 | 4 | 8 | 11 | 13 | 16 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 31 | 17 |
| Feb | 31 | 17 |
| Mar | 28 | 15 |
| Apr | 24 | 11 |
| May | 20 | 7 |
| Jun | 17 | 3 |
| Jul | 17 | 2 |
| Aug | 19 | 4 |
| Sep | 23 | 8 |
| Oct | 26 | 11 |
| Nov | 28 | 13 |
| Dec | 31 | 16 |
How hot and cold De Aar really feels
The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.
On the coldest nights, wind chill pulls the feels-like down to about -2°C (around July 10), with roughly 67 freezing days a year (feels-like at or below 0°C), worst in July.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 31 | 31 | 28 | 24 | 20 | 17 | 16 | 19 | 23 | 26 | 28 | 31 |
| Air high (°C) | 31 | 31 | 28 | 24 | 20 | 17 | 17 | 19 | 23 | 26 | 28 | 31 |
| Feels-like low (°C) | 17 | 17 | 15 | 10 | 4 | -1 | -1 | 1 | 5 | 11 | 13 | 16 |
| Air low (°C) | 17 | 17 | 15 | 11 | 7 | 3 | 2 | 4 | 8 | 11 | 13 | 16 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 31 | 31 | 17 | 17 |
| Feb | 31 | 31 | 17 | 17 |
| Mar | 28 | 28 | 15 | 15 |
| Apr | 24 | 24 | 10 | 11 |
| May | 20 | 20 | 4 | 7 |
| Jun | 17 | 17 | -1 | 3 |
| Jul | 16 | 17 | -1 | 2 |
| Aug | 19 | 19 | 1 | 4 |
| Sep | 23 | 23 | 5 | 8 |
| Oct | 26 | 26 | 11 | 11 |
| Nov | 28 | 28 | 13 | 13 |
| Dec | 31 | 31 | 16 | 16 |
Average hourly temperature in De Aar
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on January afternoons, near 31°C, and coldest before dawn in June, near 3°C.
De Aar weather by month
Every month at a glance. Click a month for its detailed page.
| 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 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
De Aar gets about 343 mm of precipitation a year. On a typical day the chance of rain is mostly dry, but that rises and falls sharply with the seasons.
The wetter season lasts 5.6 months, from around Nov 8 to Apr 26, peaking in February at about 29% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 6.
January is the wettest month by volume, with 56 mm over about 7 wet days; July is the driest, with 10 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 23 | 27 | 22 | 17 | 10 | 8 | 7 | 7 | 8 | 12 | 15 | 17 |
| Rain days | 7 | 8 | 7 | 5 | 3 | 3 | 2 | 2 | 2 | 4 | 5 | 5 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 23 | 7 |
| Feb | 27 | 8 |
| Mar | 22 | 7 |
| Apr | 17 | 5 |
| May | 10 | 3 |
| Jun | 8 | 3 |
| Jul | 7 | 2 |
| Aug | 7 | 2 |
| Sep | 8 | 2 |
| Oct | 12 | 4 |
| Nov | 15 | 5 |
| Dec | 17 | 5 |
Monthly rainfall
Over a full year, De Aar collects about 343 mm of rain across 53 wet days — roughly 29 mm in an average month.
It doesn’t fall evenly. January is the wettest month with 56 mm, while July is the driest at just 10 mm. The three wettest months alone bring about 44% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 56 | 47 | 48 | 31 | 19 | 14 | 10 | 11 | 14 | 24 | 33 | 37 |
| Rain days | 7 | 8 | 7 | 5 | 3 | 3 | 2 | 2 | 2 | 4 | 5 | 5 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 56 | 7 |
| Feb | 47 | 8 |
| Mar | 48 | 7 |
| Apr | 31 | 5 |
| May | 19 | 3 |
| Jun | 14 | 3 |
| Jul | 10 | 2 |
| Aug | 11 | 2 |
| Sep | 14 | 2 |
| Oct | 24 | 4 |
| Nov | 33 | 5 |
| Dec | 37 | 5 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In De Aar, the average share of the sky covered by clouds shows mild seasonal variation over the course of the year.
The clearer part of the year begins around June 21 and lasts for 2.5 months, ending around September 4. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 86% of the time on average.
The cloudier part of the year begins around March 24 and lasts for 2.9 months, ending around June 20. The cloudiest month is May, when it is overcast or mostly cloudy 21% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 84 | 85 | 84 | 79 | 79 | 82 | 86 | 85 | 80 | 79 | 81 | 84 |
| Cloudier (%) | 16 | 15 | 16 | 21 | 21 | 18 | 14 | 15 | 20 | 21 | 19 | 16 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 84 | 16 |
| Feb | 85 | 15 |
| Mar | 84 | 16 |
| Apr | 79 | 21 |
| May | 79 | 21 |
| Jun | 82 | 18 |
| Jul | 86 | 14 |
| Aug | 85 | 15 |
| Sep | 80 | 20 |
| Oct | 79 | 21 |
| Nov | 81 | 19 |
| Dec | 84 | 16 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around January 1, brings about 14 hours of light; the shortest, around June 13, only 10 hours — a swing of roughly 4 hours.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.8 | 13.1 | 12.2 | 11.3 | 10.5 | 10.1 | 10.2 | 10.9 | 11.8 | 12.8 | 13.6 | 13.9 |
| Sunrise (AM) | 5:40 | 6:05 | 6:27 | 6:46 | 7:07 | 7:23 | 7:24 | 7:02 | 6:24 | 5:46 | 5:22 | 5:21 |
| Sunset (PM) | 7:27 | 7:12 | 6:41 | 6:02 | 5:34 | 5:25 | 5:35 | 5:54 | 6:13 | 6:32 | 6:57 | 7:19 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 13.8 | 5:40 | 7:27 |
| Feb | 13.1 | 6:05 | 7:12 |
| Mar | 12.2 | 6:27 | 6:41 |
| Apr | 11.3 | 6:46 | 6:02 |
| May | 10.5 | 7:07 | 5:34 |
| Jun | 10.1 | 7:23 | 5:25 |
| Jul | 10.2 | 7:24 | 5:35 |
| Aug | 10.9 | 7:02 | 5:54 |
| Sep | 11.8 | 6:24 | 6:13 |
| Oct | 12.8 | 5:46 | 6:32 |
| Nov | 13.6 | 5:22 | 6:57 |
| Dec | 13.9 | 5:21 | 7:19 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
De Aar averages about 21 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 18 and 24 days.
The sunnier stretch runs 3.4 months, from around May 30 to Sep 8. The sunniest month is July, with roughly 24 sunny days (brilliant).
The greyest month is April, down near 19 sunny days — about 19% fewer than the July peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 21 | 19 | 21 | 19 | 21 | 22 | 24 | 23 | 20 | 20 | 19 | 21 |
| Sky | Bright | Bright | Bright | Bright | Bright | Bright | Brilliant | Bright | Bright | Bright | Bright | Bright |
| Sunny days | Sky | |
|---|---|---|
| Jan | 21 | Bright |
| Feb | 19 | Bright |
| Mar | 21 | Bright |
| Apr | 19 | Bright |
| May | 21 | Bright |
| Jun | 22 | Bright |
| Jul | 24 | Brilliant |
| Aug | 23 | Bright |
| Sep | 20 | Bright |
| Oct | 20 | Bright |
| Nov | 19 | Bright |
| Dec | 21 | Bright |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In De Aar, the air stays dry or comfortable essentially all year. Even in February, the muggiest month, it feels humid or worse only about 7% of the time — humidity is not something you need to plan around here.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 80 | 73 | 84 | 96 | 100 | 100 | 100 | 100 | 100 | 99 | 96 | 92 |
| Comfortable (%) | 15 | 19 | 13 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 6 |
| Humid (%) | 6 | 7 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| Jan | 80 | 15 | 6 |
| Feb | 73 | 19 | 7 |
| Mar | 84 | 13 | 3 |
| Apr | 96 | 4 | 0 |
| May | 100 | 0 | 0 |
| Jun | 100 | 0 | 0 |
| Jul | 100 | 0 | 0 |
| Aug | 100 | 0 | 0 |
| Sep | 100 | 0 | 0 |
| Oct | 99 | 1 | 0 |
| Nov | 96 | 4 | 0 |
| Dec | 92 | 6 | 2 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Across the year, average wind speed in De Aar is typically light breeze, near 15 km/h, and varies little with the seasons.
The windier part of the year lasts 5.7 months, from around Aug 23 to Feb 13. The windiest month is November, averaging about 17 km/h (light breeze).
The calmer part of the year runs from around Feb 14 to Aug 22, with May the calmest month at about 13 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 16 | 15 | 14 | 13 | 13 | 14 | 14 | 15 | 15 | 16 | 17 | 17 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 16 | light breeze |
| Feb | 15 | light breeze |
| Mar | 14 | light breeze |
| Apr | 13 | light breeze |
| May | 13 | light breeze |
| Jun | 14 | light breeze |
| Jul | 14 | light breeze |
| Aug | 15 | light breeze |
| Sep | 15 | light breeze |
| Oct | 16 | light breeze |
| Nov | 17 | light breeze |
| Dec | 17 | light breeze |
Best time to visit De Aar
To characterize how pleasant the weather is in De Aar throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around early August, De Aar is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best times of year to visit De Aar for general outdoor tourist activities run from late March to early June and again from late July to late November, with a peak score in the last week of September.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 5.0 | 5.2 | 6.7 | 8.0 | 7.8 | 6.8 | 6.9 | 7.8 | 8.6 | 8.2 | 7.2 | 5.6 |
| Rating | fair | fair | good | ideal | ideal | good | good | ideal | ideal | ideal | good | good |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 5.0 | fair |
| Feb | 5.2 | fair |
| Mar | 6.7 | good |
| Apr | 8.0 | ideal |
| May | 7.8 | ideal |
| Jun | 6.8 | good |
| Jul | 6.9 | good |
| Aug | 7.8 | ideal |
| Sep | 8.6 | ideal |
| Oct | 8.2 | ideal |
| Nov | 7.2 | good |
| Dec | 5.6 | good |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit De Aar for hot-weather activities is from mid September to mid April, with a peak score in the last week of November.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for De Aar, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
For a warm-season trip around January (highs near 31°C), the essentials are light clothes and sun protection. In the cold season around June (highs near 17°C), pack a warm layer.
In January, De Aar sees daytime highs around 31°C and nights near 17°C. Pack light clothes and sun protection. About 7 days see rain.
UV index (midday) in De Aar by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
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 |
Average hourly UV index in De Aar
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in January the burn window is concentrated in the middle of the day: about 9 hours a day reach index 3 (protection recommended), and 7.5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 9 | 8.5 | 7.5 | 6 | 4.5 | 3 | 4 | 5.5 | 6.5 | 8 | 9 | 9 |
| UV ≥ 6 (h/day) | 7.5 | 6.5 | 5.5 | 3 | 0 | 0 | 0 | 0 | 4 | 6 | 6.5 | 7 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 9 | 7.5 |
| Feb | 8.5 | 6.5 |
| Mar | 7.5 | 5.5 |
| Apr | 6 | 3 |
| May | 4.5 | 0 |
| Jun | 3 | 0 |
| Jul | 4 | 0 |
| Aug | 5.5 | 0 |
| Sep | 6.5 | 4 |
| Oct | 8 | 6 |
| Nov | 9 | 6.5 |
| Dec | 9 | 7 |
Growing season
De Aar is mild enough that a frost-free day stays more likely than not even in midwinter. Nights are reliably above freezing from about August 24 to May 29 (279 days); outside that window a hard frost is an occasional risk.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 97 | 81 | 76 | 87 | 98 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 4 | 30 | 31 | 22 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 97 | 4 |
| Jun | 81 | 30 |
| Jul | 76 | 31 |
| Aug | 87 | 22 |
| Sep | 98 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. De Aar banks about 2,730 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 445 | 391 | 363 | 217 | 101 | 3 | 0 | 47 | 162 | 265 | 325 | 411 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 445 |
| Feb | 391 |
| Mar | 363 |
| Apr | 217 |
| May | 101 |
| Jun | 3 |
| Jul | 0 |
| Aug | 47 |
| Sep | 162 |
| Oct | 265 |
| Nov | 325 |
| Dec | 411 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
De Aar receives about 6.0 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.3 and 8.6 kWh/m².
The brighter stretch of the year lasts 6.1 months, from around Sep 16 to Mar 20. The brightest month is December, averaging about 8.5 kWh/m² (intense).
The dimmest month is June, down near 3.4 kWh/m² — roughly 60% less than the December peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 8.1 | 7.3 | 6.2 | 4.8 | 3.9 | 3.4 | 3.7 | 4.7 | 6.0 | 7.2 | 8.1 | 8.5 |
| Level | Intense | Intense | Intense | Bright | Moderate | Moderate | Moderate | Bright | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 8.1 | Intense |
| Feb | 7.3 | Intense |
| Mar | 6.2 | Intense |
| Apr | 4.8 | Bright |
| May | 3.9 | Moderate |
| Jun | 3.4 | Moderate |
| Jul | 3.7 | Moderate |
| Aug | 4.7 | Bright |
| Sep | 6.0 | Intense |
| Oct | 7.2 | Intense |
| Nov | 8.1 | Intense |
| Dec | 8.5 | Intense |
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. 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).