What grows in Biombo
Guinea-Bissau
The 2026 season in Biombo
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | May 2026 to November 2026 |
| Rain in a typical year | About 1,734 mm in a typical farming district |
| Across its districts | From about 1,560 mm in the driest of 3 districts to about 1,734 mm in the wettest |
| This season's rain | Leaning dry — September and October look short of rain. Plant at the early end of the window, favour quicker and more drought-tolerant crops, and keep moisture in the soil: mulch, and weed early. |
| This season's heat | Hotter than usual — about +0.7 °C over the growing months. Heat makes the same rain do less, so a dry spell bites sooner: do not plant late, and shade or mulch what you can. |
| What that supports | enough rain for one full main crop, warm all year, so nothing but rain ends the season |
| Ground this covers | 4 kinds of ground. The season below is one typical farming district's, not a figure for the whole of this area. |
| 45% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 181 growing days · about 1,730 mm · May to November |
|---|---|
| 32% | enough rain for one short crop, and only if timed to it; warm all year, so nothing but rain ends the season 179 growing days · about 1,560 mm · May to November |
| 17% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 181 growing days · about 1,650 mm · May to November |
| 6% | enough rain for one short crop, and only if timed to it; warm all year, so nothing but rain ends the season 179 growing days · about 1,550 mm · May to November |
last updated 17 September 2026 · from all 3 areas within it
Biombo's districts
What grows here
-
CashewFavourableGrows well in 3 of 3 districts
Plant 15 May 2026 – 2 Oct 2026 open now
matched to this season's forecast
about 1.5 t/ha expected
Pest/disease risk — manageable -
CowpeaFavourableGrows well in 3 of 3 districts
Plant 25 May 2026 – 22 Sep 2026 closed for this season
matched to this season's forecast
about 1.8 t/ha expected
Pest/disease risk — manageableSoil pH below the crop's optimumEarly-maturing — escapes late drought -
Green gramFavourableGrows well in 3 of 3 districts
Plant 25 May 2026 – 22 Sep 2026 closed for this season
matched to this season's forecast
about 1.5 t/ha expected
Pest/disease risk — manageableSoil pH outside the crop's rangeCorrect soil pH (lime) -
Jute mallowFavourableGrows well in 3 of 3 districts
Plant 25 May 2026 – 12 Oct 2026 open now
matched to this season's forecast
about 9.3 t/ha expected
Pest/disease risk — manageableSoil pH below the crop's optimumEarly-maturing — escapes late drought -
OkraFavourableGrows well in 3 of 3 districts
Plant 4 Jun 2026 – 22 Sep 2026 closed for this season
matched to this season's forecast
about 10.0 t/ha expected
Pest/disease risk — manageableSoil pH outside the crop's rangeCorrect soil pH (lime) -
Pearl milletFavourableGrows well in 3 of 3 districts
Plant 15 May 2026 – 22 Sep 2026 closed for this season
matched to this season's forecast
about 2.5 t/ha expected
Pest/disease risk — manageableSoil pH below the crop's optimumEarly-maturing — escapes late drought
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.
What grows here with irrigation
-
BananaFavourable Needs irrigationGrows well in 3 of 3 districts
Plant 21 Jan 2026 – 1 Jan 2027 open now
matched to this season's forecast
about 55.6 t/ha expected
Pest/disease risk — manageableSoil pH outside the crop's rangeCorrect soil pH (lime) -
CocoaFavourable Needs irrigationGrows well in 3 of 3 districts
Plant 21 Jan 2026 – 1 Jan 2027 open now
matched to this season's forecast
about 1.9 t/ha expected
Pest/disease risk — manageableSoil pH below the crop's optimum -
Robusta coffeeFavourable Needs irrigationGrows well in 3 of 3 districts
Plant 21 Jan 2026 – 1 Jan 2027 open now
matched to this season's forecast
about 2.7 t/ha expected
Pest/disease risk — manageable -
GrapefruitFavourable Needs irrigationGrows well in 3 of 3 districts
Plant 21 Jan 2026 – 1 Jan 2027 open now
matched to this season's forecast
about 37.1 t/ha expected
Pest/disease risk — manageableSoil pH outside the crop's rangeCorrect soil pH (lime) -
Oil palmFavourable Needs irrigationGrows well in 3 of 3 districts
Plant 21 Jan 2026 – 1 Jan 2027 open now
matched to this season's forecast
about 19.3 t/ha expected
Pest/disease risk — manageable -
PineappleFavourable Needs irrigationGrows well in 3 of 3 districts
Plant 21 Jan 2026 – 1 Jan 2027 open now
matched to this season's forecast
about 64.8 t/ha expected
Pest/disease risk — manageable
Plan the season, not just check it
The crops above are gathered from every district in Biombo, and the ground under them is not all the same. 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.
Or check your field firstThis 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
What crops grow well in Biombo?
Cashew, Cowpea, Green gram, Jute mallow, Okra all rate well in Biombo — scored against its own rainfall, soil and terrain rather than a national average.
When should I plant Cashew in Biombo?
In Biombo the window for Cashew runs 15 May 2026 to 2 Oct 2026.
Is there a farming app that works in Biombo?
Divisi does. It reads Biombo's own rainfall, soil and terrain rather than a national average, so the planting dates and crop shortlist on this page are the same ones the app works out for a field here — then dates each job for that field, and keeps working with no signal.
Is this exact for my own field?
No — these are readings taken across Biombo, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.