Soyo weather in December

In December, Soyo sees average daytime highs of 26°C and overnight lows near 25°C, with 79 mm of rain across 12.4 wet days and about 12.3 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 12% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 18 min at the start of December to 12 h 24 min by month's end. Set against the rest of the year, December is Soyo's 8th-clearest and 6th-windiest month. For the whole year in context, see Soyo's year-round climate.

Daytime high
26°
5th warmest
Overnight low
25°
8th coldest
Rainfall
79 mm
12.4 wet days
Daylight
12 h 24 min
5:56 AM – 6:17 PM
Cloud cover
73%
8th clearest
Wind
13 km/h
6th windiest
Solar energy
5.06 kWh/m²
Travel score
6.0
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical December day in Soyo reaches about 26°C in the afternoon and slips back to 25°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 27°C. Set against its neighbours, December runs on par with November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12625
22625
32625
42625
52625
62625
72625
82625
92625
102625
112625
122625
132625
142625
152625
162625
172625
182625
192625
202625
212625
222625
232625
242625
252625
262625
272625
282625
292625
302625
312625

How December really feels in Soyo

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.

Soyo weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 26°8713.912.35.7
Feb28° / 26°8913.412.25.5
Mar28° / 27°9414.2125.5
Apr27° / 26°10014.411.95.6
May26° / 25°254.311.77.6
Jun24° / 23°0011.78.8
Jul22° / 21°0011.78.3
Aug22° / 21°10.211.88.1
Sep23° / 22°20.7128.2
Oct25° / 24°184.112.17.6
Nov26° / 25°6411.512.36.3
Dec26° / 25°7912.412.36.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 17% of December, with mostly cloudy or overcast conditions the remaining 72%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23367
33268
43169
53169
63070
73070
83169
93070
103070
112971
122872
132872
142773
152773
162773
172674
182674
192773
202674
212674
222773
232773
242773
252773
262773
272773
282773
292872
302971
312971

Chance of precipitation in December

Any precipitation

Soyo gets around 79 mm of rain over 12.4 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 40% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
338
438
538
638
738
838
938
1039
1139
1240
1340
1440
1540
1641
1741
1841
1941
2041
2141
2242
2342
2442
2542
2641
2741
2841
2941
3041
3141

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 87% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
11918
21918
31918
41918
51909
61909
718910
818910
918811
1018811
1118811
1218712
1308812
1408713
1508713
1608614
1708614
1808515
1908515
2008515
2108515
2218316
2318316
2418316
2518316
2618316
2718316
2818316
2918316
3018415
3118415

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 13 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 18 min at the start of December to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 5:50 AM to 6:03 AM, and sunset from 6:10 PM to 6:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:506:10
212.35:516:11
312.35:516:11
412.35:516:12
512.35:526:12
612.35:526:12
712.35:526:13
812.35:536:13
912.35:536:14
1012.35:546:14
1112.35:546:15
1212.45:546:15
1312.45:556:16
1412.45:556:16
1512.45:566:17
1612.45:566:17
1712.45:576:18
1812.45:576:18
1912.45:576:19
2012.45:586:19
2112.45:586:20
2212.45:596:20
2312.45:596:21
2412.46:006:21
2512.46:006:22
2612.46:016:22
2712.46:016:22
2812.46:026:23
2912.46:026:23
3012.46:036:24
3112.46:036:24

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.06 kWh/m².

For context, solar energy here swings from a low near 4.41 kWh/m² to a high of 5.33 kWh/m² in February across the year — December's 5.06 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.1Bright
305.2Bright
315.2Bright
Planning a trip in December

Hazard calendar for Soyo

In seasonPeak

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

Soyo's rainy season runs November–April, 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 Soyo?

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

6.0
Sightseeing
8th-best month of the year
5.9
Beach & pool
6th-best month of the year

December is a reasonable time to visit Soyo for sightseeing.

What to pack for Soyo in December

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

In December, Soyo sees daytime highs around 26°C and nights near 25°C. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

Sea temperature near Soyo in December

The nearest coast averages about 27°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 27 km away) is warmest in March at about 28°C and coldest in August near 21°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb28Tropical
Mar28Tropical
Apr28Warm
May26Warm
Jun23Refreshing
Jul22Refreshing
Aug21Refreshing
Sep23Refreshing
Oct25Warm
Nov26Warm
Dec27Warm

UV index in Soyo in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Soyo peaks around March 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 10 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeMar 15UV 15Aug 10UV 6
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar15Extreme
Apr12Extreme
May9Very high
Jun7High
Jul6High
Aug6High
Sep10Very high
Oct13Extreme
Nov11Extreme
Dec10Extreme

Air quality in Soyo 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 Soyo is worst in July — around 22 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (November, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1521 µg/m³Nov 128 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar9Good
Apr10Good
May15Moderate
Jun19Moderate
Jul22Moderate
Aug18Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Soyo?

Soyo sits at 6.1°S, 12.4°E, 10 m above sea level, in Angola. The nearest listed city is Moanda, 23 km away.

MatadiTombôcoN'zetoTshelaKenge

Topography around Soyo

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

Within 3 km, the terrain around Soyo has only modest variations in elevation — a maximum elevation change of 24 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 139 m; within 80 km, significant variations in elevation — a maximum elevation change of 314 m.

The land around Soyo is covered by artificial surfaces (31%), mangroves (30%) and water (22%) within 3 km, water (52%) within 16 km, and water (39%), trees (29%) and grassland (26%) within 80 km.

3 km
24 m
16 km
139 m
80 km
314 m
treesgrasslandartificial surfacesbare terrainwaterwetlandmangroves
December weather nearby: Moanda 23 km · Cabinda 67 km · Boma 82 km · Matadi 125 km · Tombôco 130 km · N'zeto 134 km · Tshela 142 km · Kenge 148 km

Angola travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
220 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$3,129
2025
Happiness
3.8 / 10
World Happiness, 2017
Homicide rate
4.1
per 100k, 2016
Road deaths
26.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 413
Religion
Roman Catholic 41%Protestant 38%none 12%other 9%

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 Soyo (-6.1349°, 12.3689°, elevation 10 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).