Cala weather in December

In December, Cala sees average daytime highs of 24°C and overnight lows near 12°C, with 164 mm of rain across 20.7 wet days and about 14 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 23°C in the first days to 25°C by the end. The sky is clear or mostly clear about 27% of the time in December, and the air most often feels dry.

Daylight stretches from about 13 h 54 min at the start of December to 14 hours by month's end. Set against the rest of the year, December is Cala's 12th-clearest and 8th-windiest month. For the whole year in context, see Cala's year-round climate.

Daytime high
24°
3rd warmest
Overnight low
12°
10th coldest
Rainfall
164 mm
20.7 wet days
Daylight
14 hours
5:04 AM – 7:07 PM
Cloud cover
60%
12th clearest
Wind
8 km/h
8th windiest
Solar energy
6.73 kWh/m²
Travel score
5.3
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 23°C in the first days to 25°C by the end.

A typical December day in Cala reaches about 24°C in the afternoon and slips back to 12°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 30°C. Set against its neighbours, December runs about 1°C warmer than November and about 1°C cooler than January.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12311
22311
32311
42412
52412
62412
72412
82412
92412
102412
112412
122412
132412
142412
152412
162412
172413
182413
192513
202513
212513
222513
232513
242513
252513
262513
272513
282513
292513
302513
312514

How December really feels in Cala

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Cala weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan25° / 14°17620.4013.85.3
Feb25° / 14°16017.9013.25.4
Mar24° / 12°13517.3012.26.0
Apr21° / 7210011.36.7
May19° / 224.60.110.47.4
Jun17° / 193.30.2106.9
Jul17° / 203.10.510.27.0
Aug19° / 325.40.410.97.3
Sep22° / 507.60.311.87.1
Oct22° / 9915.2012.86.1
Nov23° / 11°13917.40.113.65.7
Dec24° / 12°16420.70145.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 22% of December, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24753
34753
44654
54654
64654
74654
84654
94753
104753
114654
124753
134753
144852
154852
164951
174951
184951
195050
205050
215050
225149
235149
245248
255248
265149
275248
285248
295347
305248
315248

Chance of precipitation in December

Any precipitation

Cala gets around 164 mm of rain over 20.7 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 67% and peaks near 70% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
163
263
363
464
564
664
765
865
965
1065
1165
1266
1366
1467
1567
1667
1768
1868
1968
2068
2169
2269
2369
2469
2570
2670
2770
2870
2969
3069
3169

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 50% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
170291
269301
367312
465332
564342
663352
762362
859383
958393
1057403
1156413
1254424
1353434
1452444
1550455
1649465
1748466
1847476
1946477
2045488
2143488
2242499
23414910
24395011
25385012
26365113
27355213
28335314
29325315
30315316
31305416

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 54 min at the start of December to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 5:02 AM to 5:12 AM, and sunset from 6:56 PM to 7:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.95:026:56
213.95:026:57
313.95:026:58
413.95:026:58
514.05:026:59
614.05:027:00
714.05:027:01
814.05:027:01
914.05:027:02
1014.05:027:03
1114.05:037:04
1214.05:037:04
1314.05:037:05
1414.05:037:05
1514.05:047:06
1614.05:047:07
1714.05:047:07
1814.15:057:08
1914.15:057:08
2014.15:067:09
2114.15:067:09
2214.15:067:10
2314.15:077:10
2414.15:077:11
2514.15:087:11
2614.15:097:12
2714.05:097:12
2814.05:107:12
2914.05:107:13
3014.05:117:13
3114.05:127:13

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.73 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.26 kWh/m² to a high of 6.73 kWh/m² in December across the year — December's 6.73 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.6Intense
76.6Intense
86.6Intense
96.7Intense
106.7Intense
116.7Intense
126.7Intense
136.7Intense
146.7Intense
156.8Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.8Intense
226.8Intense
236.8Intense
246.8Intense
256.8Intense
266.8Intense
276.8Intense
286.7Intense
296.7Intense
306.7Intense
316.7Intense
Planning a trip in December

Hazard calendar for Cala

In seasonPeak

In December, Cala sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Cala's rainy season runs October–March, when most of the year's rain falls.

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

Is December a good time to visit Cala?

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

5.3
Sightseeing
11th-best month of the year
4.6
Beach & pool
5th-best month of the year

December is a reasonable time to visit Cala for sightseeing.

What to pack for Cala in December

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

In December, Cala sees daytime highs around 24°C and nights near 12°C. Pack rain gear and sun protection. Worth having: light clothes. About 21 days see rain.

rain gearsun protectionlight clothes

UV index in Cala in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December 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 Cala peaks around January 14 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighExtremeJan 14UV 14Jun 23UV 4
UV index (midday)Level
Jan15Extreme
Feb13Extreme
Mar11Extreme
Apr7High
May5High
Jun4Moderate
Jul4Moderate
Aug6High
Sep7High
Oct11Extreme
Nov11Extreme
Dec13Extreme

Air quality in Cala in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Cala is worst in September — around 23 µg/m³ PM2.5 (moderate), about 4.9× the cleanest month (December, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 923 µg/m³Dec 225 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb6Good
Mar7Good
Apr8Good
May10Good
Jun12Good
Jul13Moderate
Aug23Moderate
Sep23Moderate
Oct14Moderate
Nov6Good
Dec5Good
Location & terrain

Where is Cala?

Cala sits at 31.5°S, 27.7°E, 1,196 m above sea level, in South Africa. The nearest listed city is Khowa, 26 km away.

Topography around Cala

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

Within 3 km, the terrain around Cala has significant variations in elevation — a maximum elevation change of 497 m around an average of 1,228 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 810 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,269 m.

The land around Cala is covered by grassland (59%) within 3 km, grassland (79%) within 16 km, and grassland (76%) within 80 km.

3 km
497 m
16 km
810 m
80 km
2,269 m
treesshrubsgrasslandcroplandartificial surfaces
December weather nearby: Khowa 26 km · Lady Frere 48 km · Ugie 63 km · Queensdale 78 km · Queenstown 88 km · Butterworth 99 km · Mthatha 103 km · Whittlesea 110 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 Cala (-31.5236°, 27.6952°, elevation 1,196 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. 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).