Divisi
When to plant Watermelon in Wajir
Kenya
Known here as tikiti maji
Watermelon is a warm-season trailing vine, grown flat along the ground for its big, sweet, thirst-quenching fruit — a cousin of pumpkin, cucumber and melon.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Favourable | |
| When to plant | 14 Sep 2026 – 4 Oct 2026 open now | 10 Feb 2026 – 21 Jan 2027 |
| Expected harvest | 17.4–22.2 t/ha | about 50.0 t/ha |
| Harvest | From 3 Dec 2026 to 22 Jan 2027, depending on the planting date | |
| Ready to harvest | 80–110 days after planting | |
| Work it takes | 46–96 days per hectare, by hand | |
| Rain meets its needs | 67% | |
Rain-fed. These dates are worked out from each place's own rainfall, for a field watered by the season — with irrigation a window can open earlier, close later, or come round more than once a year. Check your own field under What grows, or get the Divisi app for a calendar dated to your farm.
If you only get one chance to plant, aim for around 24 Sep 2026. That is the point in the window where the rains are most reliably established.
This season's outlook for Wajir leans wet. Plant at the early end of the window, and make sure water can drain off the field — a wet year does more damage through waterlogging than through the rain itself.
Planting after 4 Oct 2026 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Wajir
| Rain and temperature | 96% |
|---|---|
| The soil | 96% |
| The lie of the land | 88% |
For watermelon in Wajir, the lie of the land is the tightest of the three at 88%. You cannot flatten it, but you can farm it: plant along the contour rather than up and down, ridge or tie ridges to hold water on the slope, and expect shallower rooting than the crop would manage on flat ground.
The 2026 season in Wajir
| Rain in a typical year | About 322 mm in a typical farming district |
|---|---|
| Across its districts | From about 268 mm in the driest of 6 districts to about 327 mm in the wettest |
| This season's rain | Leaning wet — make sure water can drain off the field. |
| What that supports | enough rain for one short crop, and only if timed to it, warm all year, so nothing but rain ends the season |
| Ground this covers | One kind of ground throughout. |
last updated 16 September 2026 · from all 6 areas within it
Limited water holds back about 35% of yield here.
What watermelon needs to grow here
| Soil it likes | well-drained sandy loam or loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 6.0 and 7.0 |
| Spacing | 240 cm between rows, 140 cm between plants |
| Feed it most with | potassium, boron and calcium |
What it takes to grow watermelon in Wajir
| Planting material | About 4,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 49 kg per hectare |
| Phosphate (P₂O₅) | About 13 kg per hectare |
| Potash (K₂O) | About 71 kg per hectare |
| In the shops | A basal compound at planting — Compound D, or an NPK blend — covers the phosphate and potash. A nitrogen top dressing — urea or AN — goes on once the crop is established. |
| Hand work | 46–96 days per hectare, by hand |
These are the nutrients a watermelon crop of that size carries off the field. What you actually apply depends on what your soil already holds — which is what a soil test, or the app's field records, tell you.
What to watch for
Grow Watermelon with a plan, not a guess
Everything above describes Wajir as a whole — your own soil, slope and rainfall will shift the dates. The Divisi app works them out for your field, and dates each job that follows.
Watermelon in nearby districts
This calendar moves
Planting windows shift with the forecast. Leave your email and we'll send what changed, and a note when planting time nears — a couple of emails a month at most.
Frequently asked questions
Will watermelon grow well in Wajir?
Wajir rates as favourable for watermelon.
When should I plant watermelon in Wajir?
Typically 14 Sep 2026 to 4 Oct 2026, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Wajir, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
