Grabouw weather in January

In January, Grabouw sees average daytime highs of 23°C and overnight lows near 17°C, with 25 mm of rain across 5 wet days and about 14 hours of daylight. It is the 2nd-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 67% 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 Grabouw's 2nd-clearest and 1st-windiest month. For the whole year in context, see Grabouw's year-round climate.

Daytime high
23°
2nd warmest
Overnight low
17°
11th coldest
Rainfall
25 mm
5 wet days
Daylight
14 hours
5:52 AM – 7:55 PM
Cloud cover
30%
2nd clearest
Wind
16 km/h
1st windiest
Solar energy
7.88 kWh/m²
Travel score
8.2
out of 10

Grabouw is town in the Western Cape, South Africa.

Density
5,638/km²
people per km²
Founded
1856

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical January day in Grabouw reaches about 23°C in the afternoon and slips back to 17°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 26°C. Set against its neighbours, January runs about 1°C warmer than December and on par with February.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12317
22317
32317
42317
52317
62317
72317
82317
92317
102317
112317
122317
132317
142317
152317
162317
172317
182317
192318
202318
212318
222318
232318
242318
252318
262318
272318
282318
292318
302318
312318

Grabouw weather by month

How January compares with the rest of the year at a glance. January is the 2nd-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 17°255148.2
Feb23° / 18°235.113.38.2
Mar22° / 17°265.512.37.8
Apr20° / 14°496.411.27.1
May18° / 13°648.610.26.3
Jun16° / 11°10210.99.85.1
Jul16° / 10°999.8105.0
Aug16° / 10°8611.110.74.9
Sep17° / 11°568.611.85.6
Oct18° / 13°467.112.96.6
Nov20° / 14°436.613.87.0
Dec22° / 16°265.414.27.8

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 67% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 18%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17921
27921
37921
48020
58020
68020
78020
88119
98218
108218
118218
128218
138317
148317
158317
168317
178416
188515
198416
208416
218416
228416
238416
248416
258416
268416
278317
288317
298317
308416
318416

Chance of precipitation in January

Any precipitation

Grabouw gets around 25 mm of rain over 5 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 16% and peaks near 18% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
117
218
318
418
518
618
718
818
918
1018
1118
1218
1317
1417
1516
1616
1715
1815
1915
2014
2114
2214
2314
2414
2515
2615
2715
2815
2915
3016
3116

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12141353
22141353
32042353
42042353
52042353
61942353
71942354
81942354
91943354
101943344
111943345
121943335
131943335
141943335
151942346
161842346
171841356
181741366
191640376
201640386
211540396
221540406
231439406
241439416
251339426
261339426
271239436
281239435
291240435
301140445
311140445

Wind in January

Winds average 16 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in January

DaylightNight

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 5:40 AM to 6:06 AM, and sunset from 7:54 PM to 7:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.25:407:54
214.25:417:55
314.25:417:55
414.25:427:55
514.25:437:55
614.25:437:55
714.25:447:55
814.25:457:55
914.25:467:55
1014.15:477:55
1114.15:487:55
1214.15:487:55
1314.15:497:55
1414.15:507:55
1514.15:517:55
1614.05:527:55
1714.05:537:54
1814.05:547:54
1914.05:557:54
2014.05:567:54
2113.95:567:53
2213.95:577:53
2313.95:587:53
2413.95:597:52
2513.96:007:52
2613.86:017:51
2713.86:027:51
2813.86:037:50
2913.86:047:50
3013.76:057:49
3113.76:067:49

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 7.88 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 7.92 kWh/m² in December across the year — January's 7.88 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
18.0Intense
28.0Intense
38.0Intense
48.0Intense
58.0Intense
68.0Intense
78.0Intense
88.0Intense
98.0Intense
108.0Intense
118.0Intense
128.0Intense
137.9Intense
147.9Intense
157.9Intense
167.9Intense
177.9Intense
187.9Intense
197.9Intense
207.8Intense
217.8Intense
227.8Intense
237.8Intense
247.7Intense
257.7Intense
267.7Intense
277.7Intense
287.6Intense
297.6Intense
307.6Intense
317.5Intense
Planning a trip in January

Hazard calendar for Grabouw

In seasonPeak

None of Grabouw's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Grabouw's rainy season runs April–September, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Grabouw?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

8.2
Sightseeing
1st-best month of the year
6.2
Beach & pool
2nd-best month of the year

January is one of the better times to visit Grabouw for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Grabouw in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Grabouw sees daytime highs around 23°C and nights near 17°C. Pack sun protection. Worth having: light clothes. About 5 days see rain.

sun protectionlight clothes

Sea temperature near Grabouw in January

The nearest coast averages about 19°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 13 km away) is warmest in January at about 19°C and coldest in July near 15°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

14°16°18°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan19Cool
Feb18Cool
Mar17Cool
Apr16Cool
May16Cool
Jun15Cool
Jul15Bracing
Aug15Bracing
Sep15Cool
Oct16Cool
Nov17Cool
Dec18Cool

UV index in Grabouw in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Grabouw peaks around January 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 13UV 13Jun 21UV 3
UV index (midday)Level
Jan13Extreme
Feb10Very high
Mar10Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct10Extreme
Nov12Extreme
Dec12Extreme

Air quality in Grabouw in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Grabouw is worst in June — around 28 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (December, 11 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateGoodJun 1228 µg/m³Dec 1211 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb11Good
Mar19Moderate
Apr21Moderate
May27Moderate
Jun28Moderate
Jul25Moderate
Aug22Moderate
Sep18Moderate
Oct17Moderate
Nov12Good
Dec11Good
Location & terrain

Where is Grabouw?

Grabouw sits at 34.2°S, 19.0°E, 332 m above sea level, in South Africa. The nearest listed city is Somerset West, 19 km away.

Topography around Grabouw

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

Within 3 km, the terrain around Grabouw has only modest variations in elevation — a maximum elevation change of 217 m around an average of 328 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,583 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,997 m.

The land around Grabouw is covered by trees (40%) and grassland (26%) within 3 km, grassland (61%) and trees (21%) within 16 km, and water (35%) and grassland (27%) within 80 km.

3 km
217 m
16 km
1,583 m
80 km
1,997 m
treesshrubsgrasslandcroplandartificial surfaceswater
January weather nearby: Somerset West 19 km · Stellenbosch 28 km · Franschhoek 28 km · Le Roux 30 km · Hermanus 36 km · Kuils River 37 km · Caledon 39 km · Kraaifontein 44 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 Grabouw (-34.1515°, 19.0151°, elevation 332 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).