Galle
Sri Lanka
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Galle, Sri Lanka

The last month of the spring, May, is another tropical month in Galle, Sri Lanka, with average temperature fluctuating between 25°C (77°F) and 30°C (86°F).

Temperature

In May, the average high-temperature is essentially the same as in April - a still hot 30°C (86°F). In Galle, in May, the average low-temperature is 25°C (77°F).

Rainfall

In May, the rain falls for 12 days. Throughout May, 297mm (11.7") of precipitation is accumulated. Throughout the year, in Galle, there are 122 rainfall days, and 2402mm (94.6") of precipitation is accumulated.

Sea temperature

In Galle, the average water temperature is 29.1°C (84.4°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day in May is 12.4h.

Sunshine

Months with the least sunshine in Galle, Sri Lanka, are May through November, with an average of 6h of sunshine.

UV index

Months with the highest UV index in Galle, Sri Lanka, are January through October, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme health hazard from unsafe exposure to the UV radiation for average individuals.
The daily maximum UV index of 12 in May interpret into the following advice:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in May in Galle?

In May, in Galle, the average high-temperature is 30°C (86°F), and the average low-temperature is 25°C (77°F).

How much does it rain in Galle in May?

In Galle, in May, it is raining for 12 days, with typically 297mm (11.7") of accumulated precipitation.

What is the sea water temperature in May in Galle?

In Galle, in May, the average water temperature is 29.1°C (84.4°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Galle have in May?

In May, the average length of the day in Galle is 12.4h.

What is the month with the least sunshine in Galle?

Months with the least sunshine in Galle are May through November, with an average of 6h of sunshine.

How many hours of sunshine does Galle have in May?

In Galle, Sri Lanka, the average sunshine in May is 6h.

What are the months with the highest UV index in Galle?

Months with the highest UV index are January through October, with an average maximum UV index of 12.

What is the UV index reading in May in Galle?

The average daily maximum UV index in May is 12. A UV Index estimate of 11, and higher, represents an ultimate hazard to health from the exposure to the Sun's UV radiation.
Average temperature in May - Galle, Sri Lanka
  • Average high temperature in May: 30°C

Warmest months (with the highest average high temperature) are March and April (31°C).
Months with the lowest average high temperature are January, June, July, August, September, October, November and December (29°C).

  • Average low temperature in May: 25°C

The month with the highest average low temperature is May (25°C).
Coldest months (with the lowest average low temperature) are January, February, November and December (22°C).

Average rainfall in May - Galle, Sri Lanka
  • Average rainfall in May: 297mm

The wettest month (with the highest rainfall) is October (340mm).
The driest month (with the lowest rainfall) is February (86mm).

Average rainfall days in May - Galle, Sri Lanka
  • Average rainfall days in May: 12 days

Months with the highest number of rainy days are October and November (14 days).
Months with the lowest number of rainy days are January and February (5 days).

Average sea temperature in May - Galle, Sri Lanka
  • Average sea temperature in May: 29.1°C

The best month for swimming (with the highest average sea temperature) is April (29.6°C).
The coldest month (with the lowest average sea temperature) is August (27.5°C).

Average daylight in May / Average sunshine in May - Galle, Sri Lanka
  • Average daylight in May: 12.4h

The month with the longest days is June (Average daylight: 12.5h).
Months with shortest days are January, November and December (Average daylight: 11.8h).

  • Average sunshine in May: 6h

Months with most sunshine are February and March (Average sunshine: 8h).
Months with least sunshine are May, June, July, August, September, October and November (Average sunshine: 6).

Average UV index in May - Galle, Sri Lanka
  • Average UV index in May: 12

Months with the highest UV index are January, February, March, April, May, June, July, August, September and October (UV index 12).
Months with the lowest UV index are November and December (UV index 11).