Weather insights
Weather for Planting in Sri Lanka
Climate normals near Colombo for Sri Lanka (2020–2024), from Open-Meteo historical weather. Compare with the planting calendar below.
Station/areaColombo
Elev.7 m
Period2020–2024
Average temperature by month
25.9°
Jan
26.8°
Feb
27.2°
Mar
27.5°
Apr
27.4°
May
27.1°
Jun
26.9°
Jul
26.7°
Aug
26.5°
Sep
26.2°
Oct
25.7°
Nov
25.9°
Dec
Average rainfall by month
120
Jan
41
Feb
105
Mar
156
Apr
440
May
307
Jun
250
Jul
257
Aug
341
Sep
365
Oct
411
Nov
198
Dec
Millimetres per month (multi-year mean).
Month-by-month climate & sowable crops
| Month | Avg temp | Rainfall | Sowable crops |
|---|---|---|---|
| January | 25.9 °C | 120 mm | 6 crops → |
| February | 26.8 °C | 41 mm | 3 crops → |
| March | 27.2 °C | 105 mm | 6 crops → |
| April | 27.5 °C | 156 mm | 42 crops → |
| May | 27.4 °C | 440 mm | 18 crops → |
| June | 27.1 °C | 307 mm | — |
| July | 26.9 °C | 250 mm | — |
| August | 26.7 °C | 257 mm | — |
| September | 26.5 °C | 341 mm | 12 crops → |
| October | 26.2 °C | 365 mm | 33 crops → |
| November | 25.7 °C | 411 mm | 21 crops → |
| December | 25.9 °C | 198 mm | — |
FAQ: weather for planting in Sri Lanka
Are these live forecasts?
No — they are monthly climate normals from Open-Meteo’s historical archive (multi-year averages), cached for SEO and shared hosting. Use a local forecast for planting-day decisions.
How do I use this with the crop calendar?
Compare cooler/drier months with the Sri Lanka planting calendar and frost dates. Elevation and microclimates still matter.
These are multi-year monthly averages, not live forecasts. Microclimates and elevation matter — confirm with local weather before planting.