Gampaha
May
Weather in Gampaha for May 2026
Your guide to Gampaha weather in May - trends and predictions
In general, the average temperature in Gampaha at the beginning of May is 30.3 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 28.3 °C by the end of May.
Gampaha experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 273 mm.
Temperatures
Rain 🌧️
0
Dry days
31
Rainy days
0
Snow days
29°/26°
Temperatures
21 km/h
Avg max wind
82 %
Avg humidity
Gampaha Weather May
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Temperatures trend during May in Gampaha
See the weather trend as well as the moving average line
May weather in Gampaha day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Moderate rain at times | 30° /25° | 1.8 mm | 10 | |
| 2 May |  Patchy rain possible | 30° /26° | 0.3 mm | 9 | |
| 3 May | Moderate or heavy rain shower | 30° /26° | 4.8 mm | 5 | |
| 4 May | Patchy rain possible | 31° /26° | 2 mm | 6 | |
| 5 May | Moderate or heavy rain shower | 31° /27° | 2.5 mm | 5 | |
| 6 May | Patchy rain possible | 30° /26° | 1 mm | 6 | |
| 7 May | Moderate or heavy rain shower | 30° /25° | 16.1 mm | 4 | |
| 8 May | Moderate rain at times | 29° /25° | 1.9 mm | 6 | |
| 9 May | Patchy rain possible | 30° /26° | 0.4 mm | 5 | |
| 10 May | Patchy rain possible | 29° /26° | 2.2 mm | 5 | |
| 11 May | Patchy rain possible | 30° /26° | 0.7 mm | 9 | |
| 12 May | Patchy rain possible | 30° /26° | 2 mm | 6 | |
| 13 May | Moderate or heavy rain shower | 30° /26° | 8.7 mm | 6 | |
| 14 May | Moderate or heavy rain shower | 29° /26° | 17.7 mm | 3 | |
| 15 May | Moderate rain at times | 29° /26° | 2.6 mm | 4 | |
| 16 May | Patchy rain possible | 30° /25° | 7.1 mm | 5 | |
| 17 May | Moderate or heavy rain shower | 29° /25° | 14.5 mm | 5 | |
| 18 May | Moderate or heavy rain shower | 27° /25° | 20.4 mm | 5 | |
| 19 May | Moderate or heavy rain shower | 28° /26° | 12.4 mm | 6 | |
| 20 May | Moderate rain at times | 29° /26° | 5 mm | 4 | |
| 21 May | Moderate rain at times | 29° /26° | 7.4 mm | 6 | |
| 22 May | Moderate or heavy rain shower | 30° /26° | 13.4 mm | 5 | |
| 23 May | Moderate rain at times | 29° /26° | 5.4 mm | 4 | |
| 24 May | Moderate or heavy rain shower | 28° /26° | 14.3 mm | 5 | |
| 25 May | Moderate or heavy rain shower | 27° /26° | 38.1 mm | 6 | |
| 26 May |  Patchy light rain with thunder | 29° /26° | 16.2 mm | 4 | |
| 27 May | Light rain shower | 28° /26° | 9.9 mm | 5 | |
| 28 May | Patchy rain possible | 29° /27° | 5.5 mm | 5 | |
| 29 May | Light rain shower | 28° /26° | 7.5 mm | 4 | |
| 30 May | Patchy light rain with thunder | 28° /26° | 21.9 mm | 4 | |
| 31 May | Patchy light rain with thunder | 29° /26° | 9.4 mm | 5 | |
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Important Notice
Our weather forecast for Gampaha in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Gampaha forecast closer to your planned date for the most up-to-date weather information.
Change Month
Gampaha in May - FAQ
What are the expected maximum and minimum temperatures in Gampaha during May?
During May, expect a variety of temperatures with highs around 29° and lows near 26°, suitable for diverse activities and preferences.
How much rainfall should be expected in Gampaha during May?
Significant rainfall exceeding 273 mm is expected in Gampaha during May, occurring over more than 31 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Gampaha during May?
The average wind speed in Gampaha during May is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Gampaha
Explore the daily rainfall trends and prepare for Gampahas May weather 💧
Typically, Gampaha has 31 rainy days in May with a total of 273 mm of rainfall.
UV exposure in Gampaha during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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