Calulo in Summer
In summer (December, January and February), Calulo sees average daytime highs around 26°C and overnight lows near 18°C, with 412 mm of rain over about 53 wet days across the season. It is the coldest season of the year and the 3rd-wettest season.
Across summer, daytime highs hold fairly steady around 26°C. The sky is clear or mostly clear about 5% of the time across summer, and the air most often feels muggy.
Summer is Calulo's 2nd-best season to visit on our travel score. For the whole year in context, see Calulo's year-round climate.
- Avg daytime high
- 26°C
- coldest season of the year
- Avg overnight low
- 18°C
- Rainfall
- 412 mm
- 53 wet days
- Avg wind
- 5 km/h
- Travel score
- 5.1
- 2nd-best season
- Months
- Dec · Jan · Feb
Temperature in Calulo in Summer
Across summer, daytime highs hold fairly steady around 26°C.
A typical summer day in Calulo reaches about 26°C and drops to 18°C overnight. The warmest of the three months is February, the coolest January.
Calulo 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 | 26° / 18° | 117 | 16.3 | 12.5 | 5.4 |
| Feb | 27° / 18° | 120 | 15 | 12.3 | 5.2 |
| Mar | 27° / 18° | 245 | 23.4 | 12.1 | 4.3 |
| Apr | 28° / 19° | 237 | 23.7 | 11.8 | 4.2 |
| May | 28° / 18° | 37 | 7 | 11.5 | 6.6 |
| Jun | 28° / 15° | 2 | 0.4 | 11.4 | 8.6 |
| Jul | 28° / 14° | 0 | 0 | 11.5 | 8.7 |
| Aug | 27° / 14° | 5 | 1.3 | 11.7 | 8.4 |
| Sep | 27° / 16° | 40 | 10.3 | 11.9 | 6.6 |
| Oct | 26° / 18° | 143 | 22.6 | 12.2 | 4.6 |
| Nov | 26° / 18° | 256 | 26.4 | 12.5 | 3.9 |
| Dec | 25° / 18° | 175 | 21.3 | 12.6 | 4.8 |
Cloud cover in Summer
The sky is clear or mostly clear about 5% of the time across summer.
Chance of precipitation in Summer
Calulo gets around 412 mm of rain over 53 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 5 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 30 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 5.6 kWh/m².
Hazard calendar for Calulo
In summer, Calulo overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Calulo's rainy season runs October–April, when most of the year's rain falls.
Is summer a good time to visit Calulo?
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 Calulo for sightseeing.
What to pack for Calulo in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Calulo sees daytime highs around 26°C and nights near 18°C. Pack light clothes and rain gear. Worth having: sun protection. About 53 days see rain.
UV index in Calulo 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 Calulo peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 16 at about 7 (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) | 15 | 14 | 16 | 13 | 10 | 8 | 8 | 7 | 8 | 12 | 13 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 14 | Extreme |
| Mar | 16 | Extreme |
| Apr | 13 | Extreme |
| May | 10 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 7 | Very high |
| Sep | 8 | Very high |
| Oct | 12 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Air quality in Calulo 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 Calulo is worst in July — around 171 µg/m³ PM2.5 (very unhealthy), about 13.1× the cleanest month (December, 13 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 | 15 | 14 | 14 | 27 | 146 | 171 | 69 | 67 | 35 | 13 | 13 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Unhealthy | Very unhealthy | Unhealthy | Unhealthy | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 15 | Moderate |
| Mar | 14 | Moderate |
| Apr | 14 | Moderate |
| May | 27 | Moderate |
| Jun | 146 | Unhealthy |
| Jul | 171 | Very unhealthy |
| Aug | 69 | Unhealthy |
| Sep | 67 | Unhealthy |
| Oct | 35 | Moderate |
| Nov | 13 | Moderate |
| Dec | 13 | Moderate |
Where is Calulo?
Calulo sits at 10.0°S, 14.9°E, 995 m above sea level, in Angola. The nearest listed city is Dondo, 62 km away.
Topography around Calulo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Calulo.
Within 3 km, the terrain around Calulo has significant variations in elevation — a maximum elevation change of 254 m around an average of 987 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,080 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,972 m.
The land around Calulo is covered by grassland (61%) within 3 km, grassland (44%), trees (31%) and shrubs (23%) within 16 km, and grassland (56%) and trees (31%) within 80 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
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 Calulo (-10.0006°, 14.8952°, elevation 995 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.