Nanyamba weather in December

In December, Nanyamba sees average daytime highs of 31°C and overnight lows near 23°C, with 137 mm of rain across 20.3 wet days and about 12.6 hours of daylight. It is the 2nd-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 25% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of December to 12 h 36 min by month's end. Set against the rest of the year, December is Nanyamba's 9th-clearest and 10th-windiest month. For the whole year in context, see Nanyamba's year-round climate.

Daytime high
31°
2nd warmest
Overnight low
23°
10th coldest
Rainfall
137 mm
20.3 wet days
Daylight
12 h 36 min
5:58 AM – 6:35 PM
Cloud cover
63%
9th clearest
Wind
8 km/h
10th windiest
Solar energy
5.82 kWh/m²
Travel score
3.5
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical December day in Nanyamba reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 33°C. Set against its neighbours, December runs on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13122
23122
33122
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303123
313123

How December really feels in Nanyamba

Once humidity and wind are folded in, December averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Nanyamba weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°20022.612.63.3
Feb30° / 23°18720.512.43.4
Mar30° / 23°1922612.13.2
Apr29° / 22°8617.811.84.4
May29° / 20°24511.56.3
Jun29° / 19°41.111.47.2
Jul28° / 18°41.111.47.5
Aug29° / 18°51.311.67.0
Sep30° / 19°9311.96.2
Oct31° / 20°236.712.25.3
Nov31° / 22°5211.512.54.3
Dec31° / 23°13720.312.63.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 22% of December, with mostly cloudy or overcast conditions the remaining 53%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
35941
45941
55842
65743
75644
85545
95545
105347
115248
125149
134852
144852
154753
164654
174555
184555
194357
204357
214159
224159
234060
243961
253961
263763
273664
283565
293466
303367
313268

Chance of precipitation in December

Any precipitation

Nanyamba gets around 137 mm of rain over 20.3 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 65% and peaks near 68% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
156
257
359
460
561
661
762
863
963
1064
1165
1265
1366
1466
1567
1667
1767
1868
1968
2068
2168
2268
2368
2468
2568
2668
2768
2868
2968
3068
3168

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 89% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1125740
2123760
3121780
4120790
5118810
6017830
7016840
8015850
9014860
10013870
11012880
12011890
13010900
14010900
1509910
1609910
1708920
1808920
1908920
2008920
2108920
2207930
2307930
2407930
2507930
2606940
2706940
2806940
2906940
3005941
3105941

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
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 36 min at the start of December to 12 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 5:53 AM to 6:05 AM, and sunset from 6:28 PM to 6:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:536:28
212.65:536:28
312.65:546:29
412.65:546:29
512.65:546:30
612.65:546:30
712.65:556:31
812.65:556:31
912.65:556:32
1012.65:566:32
1112.65:566:33
1212.65:576:33
1312.65:576:34
1412.65:576:34
1512.65:586:35
1612.65:586:35
1712.65:596:36
1812.65:596:36
1912.65:596:37
2012.66:006:37
2112.66:006:38
2212.66:016:38
2312.66:016:39
2412.66:026:39
2512.66:026:40
2612.66:036:40
2712.66:036:41
2812.66:046:41
2912.66:046:42
3012.66:056:42
3112.66:056:42

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.82 kWh/m².

For context, solar energy here swings from a low near 4.86 kWh/m² to a high of 6.25 kWh/m² in November across the year — December's 5.82 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Intense
46.0Intense
56.0Bright
66.0Bright
76.0Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in December

Hazard calendar for Nanyamba

In seasonPeak

In December, Nanyamba sits inside its cyclone and monsoon season. The full year is below, with each hazard's peak months called out.

Nanyamba sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Nanyamba's monsoon runs December–March, when most of the year's rain falls.

Cyclone
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Nanyamba?

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

3.5
Sightseeing
9th-best month of the year
5.1
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Nanyamba.

What to pack for Nanyamba in December

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

In December, Nanyamba sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

Sea temperature near Nanyamba in December

The nearest coast averages about 29°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 70 km away) is warmest in March at about 29°C and coldest in August near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov28Warm
Dec29Tropical

UV index in Nanyamba 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 Nanyamba peaks around March 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 13UV 14Jun 19UV 9
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul9Very high
Aug11Extreme
Sep13Extreme
Oct13Extreme
Nov13Extreme
Dec13Extreme

Air quality in Nanyamba 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 Nanyamba is worst in November — around 16 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (May, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1715 µg/m³May 229 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb13Moderate
Mar11Good
Apr10Good
May9Good
Jun9Good
Jul11Good
Aug11Good
Sep9Good
Oct10Good
Nov16Moderate
Dec11Good
Location & terrain

Where is Nanyamba?

Nanyamba sits at 10.7°S, 39.8°E, 243 m above sea level, in Tanzania. The nearest listed city is Kitama, 12 km away.

NyangaoLindi

Topography around Nanyamba

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

Within 3 km, the terrain around Nanyamba has only modest variations in elevation — a maximum elevation change of 91 m around an average of 237 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 251 m; within 80 km, large variations in elevation — a maximum elevation change of 890 m.

The land around Nanyamba is covered by trees (38%), grassland (30%) and shrubs (26%) within 3 km, trees (46%), shrubs (26%) and grassland (23%) within 16 km, and trees (58%) within 80 km.

3 km
91 m
16 km
251 m
80 km
890 m
treesshrubsgrasslandcroplandartificial surfaceswatermangroves
December weather nearby: Kitama 12 km · Tandahimba 23 km · Luchingu 60 km · Mtwara 60 km · Newala 65 km · Newala Kisimani 67 km · Nyangao 72 km · Lindi 77 km

Tanzania travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type D / G
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$1,319
2025
Happiness
3.9 / 10
World Happiness, 2025
Safe drinking water
31%
of population, 2024
Homicide rate
3.7
per 100k, 2020
Road deaths
31.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Low
EF EPI 479
Religion
Christian 63%Muslim 34%folk religion 1%

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 Nanyamba (-10.6833°, 39.8333°, elevation 243 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).