Merelani in Summer
In summer (December, January and February), Merelani sees average daytime highs around 31°C and overnight lows near 19°C, with 177 mm of rain over about 30 wet days across the season. It is the warmest season of the year and the 2nd-wettest season.
Across summer, daytime highs hold fairly steady around 31°C. The sky is clear or mostly clear about 35% of the time across summer, and the air most often feels humid.
Summer is Merelani's 3rd-best season to visit on our travel score. For the whole year in context, see Merelani's year-round climate.
- Avg daytime high
- 31°C
- warmest season of the year
- Avg overnight low
- 19°C
- Rainfall
- 177 mm
- 30 wet days
- Avg wind
- 6 km/h
- Travel score
- 4.7
- 3rd-best season
- Months
- Dec · Jan · Feb
Temperature in Merelani in Summer
Across summer, daytime highs hold fairly steady around 31°C.
A typical summer day in Merelani reaches about 31°C and drops to 19°C overnight. The warmest of the three months is February, the coolest December.
Merelani 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 | 31° / 19° | 54 | 9.2 | 12.2 | 4.8 |
| Feb | 31° / 20° | 49 | 8.1 | 12.1 | 4.5 |
| Mar | 30° / 20° | 118 | 16.4 | 12 | 4.1 |
| Apr | 28° / 19° | 153 | 23.7 | 11.9 | 4.3 |
| May | 26° / 18° | 87 | 16.2 | 11.8 | 5.7 |
| Jun | 24° / 15° | 20 | 6.3 | 11.8 | 7.2 |
| Jul | 24° / 14° | 15 | 4.6 | 11.8 | 7.5 |
| Aug | 25° / 15° | 15 | 4.4 | 11.9 | 7.5 |
| Sep | 27° / 16° | 9 | 2.8 | 12 | 7.4 |
| Oct | 29° / 18° | 24 | 6.2 | 12.1 | 6.1 |
| Nov | 29° / 19° | 61 | 11.7 | 12.2 | 5.1 |
| Dec | 30° / 19° | 74 | 12.4 | 12.2 | 4.8 |
Cloud cover in Summer
The sky is clear or mostly clear about 35% of the time across summer.
Chance of precipitation in Summer
Merelani gets around 177 mm of rain over 30 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 6 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 12 min in early December to 12 h 06 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 6.1 kWh/m².
Hazard calendar for Merelani
In summer, Merelani overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Merelani's rainy season runs March–May, when most of the year's rain falls.
Is summer a good time to visit Merelani?
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 reasonable time to visit Merelani for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Merelani in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Merelani sees daytime highs around 31°C and nights near 19°C. Pack light clothes and sun protection. Worth having: rain gear. About 30 days see rain.
UV index in Merelani 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 Merelani peaks around March 14 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 10 (extreme).
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) | 15 | 15 | 16 | 15 | 12 | 10 | 11 | 11 | 14 | 14 | 13 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 16 | Extreme |
| Apr | 15 | Extreme |
| May | 12 | Extreme |
| Jun | 10 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 14 | Extreme |
| Oct | 14 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Where is Merelani?
Merelani sits at 3.6°S, 37.0°E, 916 m above sea level, in Tanzania. The nearest listed city is Mbuguni, 3.0 km away.
Topography around Merelani
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Merelani.
Within 3 km, the terrain around Merelani has only modest variations in elevation — a maximum elevation change of 159 m around an average of 934 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 389 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,230 m.
The land around Merelani is covered by grassland (46%) within 3 km, shrubs (37%), grassland (32%) and cropland (24%) within 16 km, and shrubs (37%) and grassland (30%) 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 Merelani (-3.5618°, 36.9789°, elevation 916 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.