Diani Beach · Month comparison
March vs September
September ranks #1 overall vs March at #5. Post-summer shoulder with peak-season conditions — arguably the best value month of the year.
March
#5 of 12 months
Best match
Excellent pre-rains shoulder — still dry and beautiful, with noticeably better prices than February.
- ↑Warm and mostly sunny: 60mm is minimal — a few brief showers at most, easily outweighed by 8 hours of daily sun
- ↑Manta ray season continues at Kisite-Mpunguti — arguably better than February before peak crowds arrive
September
#1 of 12 months
Best match
Post-summer shoulder with peak-season conditions — arguably the best value month of the year.
- ↑European school holidays end, reducing demand — prices drop 20% from August while conditions remain equivalent
- ↑55mm rainfall, 8 hours sunshine: ideal for both beach and inland Shimba Hills game drive on the same day
| Factor | March | September |
|---|---|---|
| Weather score | 8 | 9 |
| Value score | 6 | 6 |
| Crowd score | 6 | 6 |
| Events score | 5 | 5 |
| Atmosphere | 8 | 8 |
| Avg high temp | 33°C | 28°C |
| Monthly rain | 60mm | 101mm |
| Daily sunshine | 10.8hrs | 11hrs |
March trade-offs
- ↓Increasing humidity as the long rains approach — evenings feel heavier than January or February
- ↓Late March can bring the first advance showers of the long rains on some years
September trade-offs
- ↓Trade winds beginning to ease — kite surfing less consistent than July–August
- ↓Short rains start to build from late September in some years — an early October risk to consider
Scores compare months within Diani Beach. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →