Diani Beach weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Excellent
Best time to visit: December – March
What is the weather like in Diani Beach in December?
In December, Diani Beach is hot: daytime highs average 31 °C, and even at night it stays warm at around 25 °C. The sea averages 28.2 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. It is the rainy season: rain falls on about 14 days, totalling 61 mm. On about 22 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, December is an excellent month for a holiday in Diani Beach.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 76 | 83 | 94 |
| Day | 29° | 31° | 31° |
| Night | 24° | 25° | 25° |
| Sea | 28° | 28° | 28° |
| Sun | 8 h | 8 h | 8 h |
| Rain days | 18 | 14 | 5 |
More details for December
- Daylight
- 12 h 22 min06:06 – 18:28
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or more
- Wind
- 17 km/haverage daily peak
- Cloud cover
- 49 %on average
- Hot days
- 22 days30 °C or more
- Time zone
- UTC+3Africa/Nairobi
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %87 %
- Few rainy daysweight 20 %26 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Diani Beach in December: quick answers
Is Diani Beach hot in December?
Yes. In December, Diani Beach is hot: daytime highs average 31 °C and nights stay around 25 °C. On about 22 days the thermometer climbs to 30 °C or more.
Can you swim in Diani Beach in December?
Yes. In December the sea averages 28.2 °C – lovely and warm for swimming.
Does it rain much in Diani Beach in December?
It rains often – on about 14 days, adding up to 61 mm.
Diani Beach month by month
The whole year in Diani BeachAll destinations: KenyaWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)