Nanyamba in Summer
In summer (December, January and February), Nanyamba sees average daytime highs around 30°C and overnight lows near 23°C, with 524 mm of rain over about 63 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 30°C. The sky is clear or mostly clear about 14% of the time across summer, and the air most often feels oppressive.
Summer is Nanyamba's weakest season of the year to visit on our travel score. For the whole year in context, see Nanyamba's year-round climate.
- Avg daytime high
- 30°C
- 2nd-warmest season
- Avg overnight low
- 23°C
- Rainfall
- 524 mm
- 63 wet days
- Avg wind
- 8 km/h
- Travel score
- 3.4
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Nanyamba in Summer
Across summer, daytime highs hold fairly steady around 30°C.
A typical summer day in Nanyamba reaches about 30°C and drops to 23°C overnight. The warmest of the three months is December, the coolest December.
How summer really feels in Nanyamba
Once humidity and wind are folded in, summer brings about 90 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Nanyamba weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 30° / 23° | 200 | 22.6 | 12.6 | 3.3 |
| Feb | 30° / 23° | 187 | 20.5 | 12.4 | 3.4 |
| Mar | 30° / 23° | 192 | 26 | 12.1 | 3.2 |
| Apr | 29° / 22° | 86 | 17.8 | 11.8 | 4.4 |
| May | 29° / 20° | 24 | 5 | 11.5 | 6.3 |
| Jun | 29° / 19° | 4 | 1.1 | 11.4 | 7.2 |
| Jul | 28° / 18° | 4 | 1.1 | 11.4 | 7.5 |
| Aug | 29° / 18° | 5 | 1.3 | 11.6 | 7.0 |
| Sep | 30° / 19° | 9 | 3 | 11.9 | 6.2 |
| Oct | 31° / 20° | 23 | 6.7 | 12.2 | 5.3 |
| Nov | 31° / 22° | 52 | 11.5 | 12.5 | 4.3 |
| Dec | 31° / 23° | 137 | 20.3 | 12.6 | 3.5 |
Cloud cover in Summer
The sky is clear or mostly clear about 14% of the time across summer.
Chance of precipitation in Summer
Nanyamba gets around 524 mm of rain over 63 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 8 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 36 min in early December to 12 h 12 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.5 kWh/m².
Hazard calendar for Nanyamba
In summer, Nanyamba overlaps 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.
Is summer a good time to visit Nanyamba?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Nanyamba.
What to pack for Nanyamba in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Nanyamba sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 63 days see rain.
Sea temperature near Nanyamba in Summer
The nearest coast averages about 29°C across summer — 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 29 | 29 | 29 | 29 | 28 | 27 | 26 | 26 | 26 | 27 | 28 | 29 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Warm | Warm | Warm | Warm | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 29 | Tropical |
| Feb | 29 | Tropical |
| Mar | 29 | Tropical |
| Apr | 29 | Tropical |
| May | 28 | Tropical |
| Jun | 27 | Warm |
| Jul | 26 | Warm |
| Aug | 26 | Warm |
| Sep | 26 | Warm |
| Oct | 27 | Warm |
| Nov | 28 | Warm |
| Dec | 29 | Tropical |
UV index in Nanyamba in Summer
Clear-sky midday UV across summer averages around 14 (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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 13 | 14 | 15 | 13 | 10 | 9 | 9 | 11 | 13 | 13 | 13 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 14 | Extreme |
| Mar | 15 | Extreme |
| Apr | 13 | Extreme |
| May | 10 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 11 | Extreme |
| Sep | 13 | Extreme |
| Oct | 13 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Air quality in Nanyamba in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 14 | 13 | 11 | 10 | 9 | 9 | 11 | 11 | 9 | 10 | 16 | 11 |
| Level | Moderate | Moderate | Good | Good | Good | Good | Good | Good | Good | Good | Moderate | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 13 | Moderate |
| Mar | 11 | Good |
| Apr | 10 | Good |
| May | 9 | Good |
| Jun | 9 | Good |
| Jul | 11 | Good |
| Aug | 11 | Good |
| Sep | 9 | Good |
| Oct | 10 | Good |
| Nov | 16 | Moderate |
| Dec | 11 | Good |
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.
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.
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
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.