Diani Beach · Month comparison
April vs September
September ranks #1 overall vs April at #11. Post-summer shoulder with peak-season conditions — arguably the best value month of the year.
April
#11 of 12 months
Worth considering
Long rains begin — 250mm of monthly rainfall makes this a month to avoid for beach trips.
- ↑Lowest prices of the year: accommodation drops 50%+ from February peak — good for a budget inland extension
- ↑Shimba Hills National Reserve is vivid green and wildlife is easy to spot after rains
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 | April | September |
|---|---|---|
| Weather score | 3 | 9 |
| Value score | 8 | 6 |
| Crowd score | 8 | 6 |
| Events score | 4 | 5 |
| Atmosphere | 5 | 8 |
| Avg high temp | 30°C | 28°C |
| Monthly rain | 250mm | 101mm |
| Daily sunshine | 9.5hrs | 11hrs |
April trade-offs
- ↓250mm of rain across the month: expect multiple heavy downpours per day, not just afternoon showers
- ↓Sea conditions deteriorate sharply — diving and snorkelling visibility significantly reduced
- ↓Some beach bars and watersports operators close for the low season
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 →