Diani Beach weather in December
Diani Beach averages 30°C by day and 25°C at night in December, with the sea at 29°C and about 102 mm of rain in the month.
Day
30°C
Night
25°C
Sea
29°C
Rain
102 mm
Flight from London
9h
What December feels like
December is hot in Diani Beach: proper beach weather.
The sea is warm at 29°C: comfortable for long swims.
Expect some rainy spells: about 102 mm falls in the month.
That is 21°C warmer than an average December day in London.
Of the 56 sun destinations we track, Diani Beach is the #6 warmest in December.
Going to Diani Beach in December?
Share the TikToks and Instagram Reels you've saved for Diani Beach to Dream Trip. It finds the places, pins them on a map and builds your days around them.
Want it warmer in December?
These are hotter than Diani Beach this month for at most an hour and a half more flying:
Diani Beach weather by month
December is highlighted. Compare with November and January, or see the full year in Diani Beach.
| Month | Day | Night | Sea | Rain |
|---|---|---|---|---|
| January | 31°C | 25°C | 28°C | 47 mm |
| February | 31°C | 25°C | 29°C | 27 mm |
| March | 31°C | 25°C | 30°C | 77 mm |
| April | 29°C | 25°C | 29°C | 237 mm |
| May | 28°C | 24°C | 28°C | 270 mm |
| June | 27°C | 23°C | 28°C | 118 mm |
| July | 26°C | 22°C | 27°C | 90 mm |
| August | 26°C | 22°C | 26°C | 72 mm |
| September | 27°C | 23°C | 27°C | 85 mm |
| October | 28°C | 23°C | 27°C | 142 mm |
| November | 29°C | 24°C | 28°C | 108 mm |
| December | 30°C | 25°C | 29°C | 102 mm |
Diani Beach in December: quick answers
Is Diani Beach hot in December?
December is hot in Diani Beach: proper beach weather. Average highs are 30°C and lows 25°C.
Can you swim in Diani Beach in December?
The sea is warm at 29°C: comfortable for long swims.
Does it rain in Diani Beach in December?
Expect some rainy spells: about 102 mm falls in the month.
What is the warmest month in Diani Beach?
February, at an average high of 31°C. The coolest is July at 26°C.
How long is the flight to Diani Beach from the UK?
About 9h direct from London, estimated from the 7,266 km distance. Check your airline for exact times.
Still choosing? See where is hot in December for every destination ranked by temperature, sea and flight time.
How we measured this
Averages of every day in December from 2016 to 2025, from the Open-Meteo historical weather archive (ECMWF ERA5 reanalysis). Sea temperature is the 2023 to 2025 average from the Open-Meteo marine archive. Rain is the average monthly total. Reanalysis describes an area about 25 km across, so sheltered resorts can run a degree or two warmer. Flight time is a distance-based estimate from London Heathrow.
Planning Diani Beach in December?
Save the restaurants, beaches and views you find on TikTok and Instagram for Diani Beach straight to a map, then let Dream Trip turn them into a day-by-day plan.
