Diani Beach in Summer
In summer (December, January and February), Diani Beach sees average daytime highs around 32°C and overnight lows near 25°C, with 97 mm of rain over about 22 wet days across the season. It is the warmest season of the year and the driest season of the year.
Across summer, daytime highs hold fairly steady around 32°C. The sky is clear or mostly clear about 43% of the time across summer, and the air most often feels oppressive.
Summer is Diani Beach's 3rd-best season to visit on our travel score. For the whole year in context, see Diani Beach's year-round climate.
- Avg daytime high
- 32°C
- warmest season of the year
- Avg overnight low
- 25°C
- Rainfall
- 97 mm
- 22 wet days
- Avg wind
- 12 km/h
- Travel score
- 4.4
- 3rd-best season
- Months
- Dec · Jan · Feb
Temperature in Diani Beach in Summer
Across summer, daytime highs hold fairly steady around 32°C.
A typical summer day in Diani Beach reaches about 32°C and drops to 25°C overnight. The warmest of the three months is February, the coolest December.
How summer really feels in Diani Beach
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.
Diani Beach 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 | 32° / 25° | 23 | 4.3 | 12.2 | 4.6 |
| Feb | 32° / 25° | 17 | 3.8 | 12.1 | 4.4 |
| Mar | 32° / 25° | 56 | 14.3 | 12 | 3.7 |
| Apr | 30° / 25° | 136 | 24.1 | 11.9 | 3.3 |
| May | 28° / 24° | 212 | 23.2 | 11.8 | 4.1 |
| Jun | 27° / 23° | 92 | 20.5 | 11.8 | 4.9 |
| Jul | 27° / 22° | 72 | 20 | 11.8 | 5.2 |
| Aug | 27° / 22° | 61 | 19.6 | 11.9 | 5.3 |
| Sep | 28° / 22° | 54 | 17.6 | 12 | 5.5 |
| Oct | 29° / 23° | 90 | 17.4 | 12.1 | 4.9 |
| Nov | 30° / 24° | 78 | 17.3 | 12.2 | 4.3 |
| Dec | 31° / 25° | 58 | 13.7 | 12.2 | 4.2 |
Cloud cover in Summer
The sky is clear or mostly clear about 43% of the time across summer.
Chance of precipitation in Summer
Diani Beach gets around 97 mm of rain over 22 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 12 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 6.3 kWh/m².
Hazard calendar for Diani Beach
In summer, Diani Beach overlaps its cyclone season. The full year is below, with each hazard's peak months called out.
Diani Beach sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Diani Beach's rainy season runs April–May, when most of the year's rain falls.
Is summer a good time to visit Diani Beach?
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 Diani Beach for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Diani Beach in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Diani Beach sees daytime highs around 32°C and nights near 25°C. Pack light clothes and sun protection. Worth having: rain gear. About 22 days see rain.
Sea temperature near Diani Beach in Summer
The nearest coast averages about 28°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in March at about 29°C and coldest in August near 25°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) | 28 | 28 | 29 | 29 | 28 | 27 | 26 | 25 | 26 | 27 | 28 | 28 |
| Comfort | Warm | Tropical | Tropical | Tropical | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Warm |
| Feb | 28 | Tropical |
| Mar | 29 | Tropical |
| Apr | 29 | Tropical |
| May | 28 | Warm |
| Jun | 27 | Warm |
| Jul | 26 | Warm |
| Aug | 25 | Warm |
| Sep | 26 | Warm |
| Oct | 27 | Warm |
| Nov | 28 | Warm |
| Dec | 28 | Tropical |
UV index in Diani Beach in Summer
Clear-sky midday UV across summer averages 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 Diani Beach peaks around March 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 10 (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) | 14 | 14 | 15 | 14 | 11 | 9 | 10 | 11 | 13 | 13 | 13 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 14 | Extreme |
| Mar | 15 | Extreme |
| Apr | 14 | Extreme |
| May | 11 | Extreme |
| Jun | 9 | Very high |
| Jul | 10 | Extreme |
| Aug | 11 | Extreme |
| Sep | 13 | Extreme |
| Oct | 13 | Extreme |
| Nov | 13 | Extreme |
| Dec | 12 | Extreme |
Air quality in Diani Beach 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 Diani Beach is worst in January — around 22 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 12 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) | 22 | 20 | 16 | 13 | 14 | 16 | 16 | 15 | 13 | 12 | 15 | 21 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 22 | Moderate |
| Feb | 20 | Moderate |
| Mar | 16 | Moderate |
| Apr | 13 | Moderate |
| May | 14 | Moderate |
| Jun | 16 | Moderate |
| Jul | 16 | Moderate |
| Aug | 15 | Moderate |
| Sep | 13 | Moderate |
| Oct | 12 | Moderate |
| Nov | 15 | Moderate |
| Dec | 21 | Moderate |
Where is Diani Beach?
Diani Beach sits at 4.3°S, 39.6°E, 0 m above sea level, in Kenya. The nearest listed city is Ukunda, 4.0 km away.
Topography around Diani Beach
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Diani Beach.
Within 3 km, the terrain around Diani Beach has only modest variations in elevation — a maximum elevation change of 30 m around an average of 7 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 336 m; within 80 km, large variations in elevation — a maximum elevation change of 800 m.
The land around Diani Beach is covered by water (53%) and trees (30%) within 3 km, water (51%) and trees (28%) within 16 km, and water (43%) and grassland (22%) within 80 km.
Kenya travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type G
- 240 V · 50 Hz
- Prices
- ≈ 34% of US
- price level, 2025
- GDP per capita
- $2,363
- 2025
- Happiness
- 4.7 / 10
- World Happiness, 2025
- Homicide rate
- 4.9
- per 100k, 2022
- Road deaths
- 28.3
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- High
- EF EPI 593
- 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 Diani Beach (-4.2798°, 39.5947°, elevation 0 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.