Climate and average weather in Groot-Brakrivier

In Groot-Brakrivier, the summers are warm, fairly dry, and mostly clear and the winters are mild and mostly clear.

Best: all year

Over the course of the year, the temperature in Groot-Brakrivier typically varies from 9°C to 24°C, and is rarely below 6°C or above 28°C. February is the hottest month of the year, while July is the coldest.

Based on the travel score, Groot-Brakrivier has no single best season — it scores well the whole year round, so any month is a good time to visit for warm-weather activities.

Hottest
Feb
24°
Coldest
Jul
Wettest
Nov
60 mm
Driest
Feb
33 mm
Rain / yr
505 mm
88 wet days
Daylight
9.7–14.3 h
shortest–longest
Elevation
23 m
34.0°S
Clearest
Jul
37% cloud

Groot-Brakrivier is village in the Western Cape, South Africa.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Groot-Brakrivier 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 holds near its peak the whole year round.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Groot-Brakrivier, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

Temperatures in Groot-Brakrivier stay fairly even through the year, without a distinct hot or cool season. The warmest month is February, with an average high of 24°C and low of 18°C; the coolest is July, with an average low of 9°C and high of 17°C.

Days typically run about 7°C warmer than nights year-round.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2418
Feb2418
Mar2317
Apr2114
May2012
Jun1810
Jul179
Aug1810
Sep1911
Oct2013
Nov2115
Dec2316

Average hourly temperature in Groot-Brakrivier

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 February afternoons, near 24°C, and coldest before dawn in July, near C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Groot-Brakrivier weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 18°418.3147.7
Feb24° / 18°337.413.37.6
Mar23° / 17°46812.37.6
Apr21° / 14°456.911.27.2
May20° / 12°41610.37.1
Jun18° / 10°346.49.86.6
Jul17° / 366.6106.4
Aug18° / 10°457.310.76.4
Sep19° / 11°366.811.86.7
Oct20° / 13°517.712.96.8
Nov21° / 15°608.413.87.0
Dec23° / 16°397.914.27.5

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Groot-Brakrivier gets about 505 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.

The wetter season lasts 6.0 months, from around Oct 10 to Apr 9, peaking in November at about 29% chance on a given day. The drier stretch runs the rest of the year, bottoming out around May 14.

November is the wettest month by volume, with 60 mm over about 8 wet days; February is the driest, with 33 mm.

0%10%20%30%40%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetNov 14 · 29%May 14 · 17%
Rain on a day (%)Rain days
Jan268
Feb277
Mar258
Apr237
May196
Jun216
Jul227
Aug237
Sep237
Oct258
Nov288
Dec268

Monthly rainfall

Over a full year, Groot-Brakrivier collects about 505 mm of rain across 88 wet days — roughly 42 mm in an average month.

It doesn’t fall evenly. November is the wettest month with 60 mm, while February is the driest at just 33 mm. The three wettest months alone bring about 31% of the year’s total.

0255075JanFebMarAprMayJunJulAugSepOctNovDec413346454134364536516039
Rainfall (mm)Rain days
Jan418
Feb337
Mar468
Apr457
May416
Jun346
Jul367
Aug457
Sep367
Oct518
Nov608
Dec398

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Groot-Brakrivier, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.

The clearer part of the year begins around December 8 and lasts for 3.6 months, ending around March 26. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 74% of the time on average.

The cloudier part of the year begins around August 30 and lasts for 3.3 months, ending around December 7. The cloudiest month is October, when it is overcast or mostly cloudy 38% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecJan 13 · 75%Oct 7 · 60%clearmostly clearpartly cloudymostly cloudyovercastclearercloudier
Clearer (%)Cloudier (%)
Jan7426
Feb7327
Mar7129
Apr6733
May6634
Jun7228
Jul7327
Aug7228
Sep6436
Oct6238
Nov6634
Dec7129

Daylight, sunrise and sunset

DaylightNight

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 December 15, brings about 14 h 18 min of light; the shortest, around June 16, only 9 h 42 min — a swing of roughly 4 h 36 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan14.05:397:41
Feb13.36:087:24
Mar12.36:336:49
Apr11.26:576:06
May10.37:205:34
Jun9.87:395:24
Jul10.07:395:35
Aug10.77:145:57
Sep11.86:326:19
Oct12.95:506:42
Nov13.85:227:10
Dec14.25:207:35

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Groot-Brakrivier averages about 15 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 12 and 17 days.

The sunnier stretch runs 3.4 months, from around Dec 15 to Mar 27. The sunniest month is January, with roughly 17 sunny days (bright).

The greyest month is October, down near 13 sunny days — about 27% fewer than the January peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyergloomymixedbrightJan 1217 daysOct 1512 days
Sunny daysSky
Jan18Bright
Feb15Bright
Mar17Bright
Apr14Mixed
May14Mixed
Jun16Bright
Jul17Bright
Aug16Bright
Sep13Mixed
Oct13Mixed
Nov13Mixed
Dec16Bright

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

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 Groot-Brakrivier, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 4.2 months, from around December 2 to April 8. The muggiest month is February, when the air feels humid, muggy or worse about 61% of the time.

The most comfortable stretch runs from around April 9 to December 1, and May is the most comfortable month — the air is dry or comfortable 99% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecMay 24 · 100%Feb 10 · 37%muggyhumiddrycomfortablehumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)
Jan15344011
Feb12274913
Mar1740385
Apr4939110
May851410
Jun99100
Jul100000
Aug98200
Sep92800
Oct732430
Nov543790
Dec2841283

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 Groot-Brakrivier is typically light breeze, near 13 km/h, and varies little with the seasons.

The windier part of the year lasts 5.4 months, from around Sep 20 to Mar 1. The windiest month is December, averaging about 14 km/h (light breeze).

The calmer part of the year runs from around Mar 2 to Sep 19, with May the calmest month at about 11 km/h.

05101520JanFebMarAprMayJunJulAugSepOctNovDecwindiercalmerwindiercalmlight breezeDec 2 · 14 km/hMay 8 · 11 km/h
Wind speed (km/h)Feels
Jan14light breeze
Feb13light breeze
Mar12light breeze
Apr11calm
May11calm
Jun12calm
Jul12light breeze
Aug12light breeze
Sep13light breeze
Oct14light breeze
Nov14light breeze
Dec14light breeze

Best time to visit Groot-Brakrivier

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Groot-Brakrivier throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, Groot-Brakrivier suits general outdoor tourist activities for most of the year, with a peak score in the third week of January.

0246810JanFebMarAprMayJunJulAugSepOctNovDectravel scoretemperaturecloudsprecipitationJan 17 · 7.8

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).

Travel score (0–10)Rating
Jan7.7ideal
Feb7.6ideal
Mar7.6ideal
Apr7.2good
May7.1good
Jun6.6good
Jul6.4good
Aug6.4good
Sep6.7good
Oct6.8good
Nov7.0good
Dec7.5ideal

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 Groot-Brakrivier for hot-weather activities is from early December to late March, with a peak score in the third week of January.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationJan 21 · 6.6

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 Groot-Brakrivier, by month

EssentialRecommendedOptional

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 February (highs near 24°C), the essentials are light clothes and sun protection. In the cold season around July (highs near 17°C), pack a light layer.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In February, Groot-Brakrivier sees daytime highs around 24°C and nights near 18°C. Pack sun protection. Worth having: light clothes. About 7 days see rain.

Sea temperature near Groot-Brakrivier

Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.

The sea at the nearest coast (about 16 km away) is warmest in January at about 21°C and coldest in August near 16°C.

It's comfortable for a long swim from Dec 13 to Mar 19 — about 3.2 months when the water holds above 20°C.

14°16°18°20°22°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb21Refreshing
Mar20Refreshing
Apr18Cool
May17Cool
Jun17Cool
Jul16Cool
Aug16Cool
Sep17Cool
Oct17Cool
Nov19Cool
Dec20Refreshing

UV index (midday) in Groot-Brakrivier by month

LowModerateHighVery highExtreme

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 Groot-Brakrivier peaks around January 14 at about 13 (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 — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 14UV 13Jun 22UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct10Extreme
Nov11Extreme
Dec12Extreme

Average hourly UV index in Groot-Brakrivier

LowModerateHighVery highExtreme

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 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan97
Feb8.56
Mar7.55
Apr5.50
May30
Jun00
Jul00
Aug40
Sep5.50
Oct85.5
Nov8.56.5
Dec96.5
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Groot-Brakrivier is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecfrost-free year round
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)Frost-free shaded

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. Groot-Brakrivier banks about 2,588 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around February.

01,0002,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan336
Feb310
Mar310
Apr234
May184
Jun116
Jul101
Aug113
Sep147
Oct201
Nov235
Dec301

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.

Groot-Brakrivier receives about 5.1 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.6 and 7.6 kWh/m².

The brighter stretch of the year lasts 6.0 months, from around Sep 22 to Mar 22. The brightest month is December, averaging about 7.5 kWh/m² (intense).

The dimmest month is June, down near 2.7 kWh/m² — roughly 64% less than the December peak.

0123456789JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseDec 197.6 kWhJun 192.6 kWh
Solar energy (kWh/m²)Level
Jan7.3Intense
Feb6.5Intense
Mar5.4Bright
Apr4.1Bright
May3.1Moderate
Jun2.6Moderate
Jul2.9Moderate
Aug3.7Moderate
Sep4.9Bright
Oct6.0Intense
Nov7.0Intense
Dec7.5Intense

Where is Groot-Brakrivier?

Groot-Brakrivier sits at 34.0°S, 22.2°E, 23 m above sea level, in South Africa. The nearest listed city is Mossel Bay, 17 km away.

Swellendam

Topography around Groot-Brakrivier

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Groot-Brakrivier.

Within 3 km, the terrain around Groot-Brakrivier has only modest variations in elevation — a maximum elevation change of 198 m around an average of 76 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,438 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,099 m.

The land around Groot-Brakrivier is covered by trees (33%) within 3 km, water (36%) and grassland (21%) within 16 km, and shrubs (32%), water (29%) and grassland (23%) within 80 km.

3 km
198 m
16 km
1,438 m
80 km
2,099 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
Nearby: Mossel Bay 17 km · George 24 km · Oudtshoorn 49 km · Dysselsdorp 56 km · Knysna 76 km · Riversdale 89 km · Plettenberg Bay 106 km · Swellendam 164 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
Christian 86%or other traditional African religions 5%nothing in particular 5%Muslim 2%

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 Groot-Brakrivier (-34.0437°, 22.2257°, elevation 23 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).