May weather forecast and Climate
Guatemala City, Guatemala GT

• The average high temperature in May: 27.1°C

The warmest month (with the highest average high temperature) is April (27.8°C).
The month with the lowest average high temperature is December (23.9°C).

• The average low temperature in May: 16.8°C

Months with the highest average low temperature are May and June (16.8°C).
The coldest month (with the lowest average low temperature) is January (13.2°C).

• The average humidity in May: 77.3%

The month with the highest relative humidity is September (84.5%).
The month with the lowest relative humidity is March (73.2%).

• The average rainfall in May: 128.9mm

The wettest month (with the highest rainfall) is June (271.8mm).
The driest month (with the lowest rainfall) is January (2.8mm).

• The average rainfall days in May: 12.4 days

The month with the highest number of rainy days is June (21.1 days).
The month with the lowest number of rainy days is February (1.5 days).

• The average daylight in May: 13h

Months with the longest days are May, June, July and August (Average daylight: 13h).
Months with shortest days are January, November and December (Average daylight: 11h).

• The average sunshine in May: 5.9h

The month with most sunshine is February (Average sunshine: 8.4h).
The month with least sunshine is June (Average sunshine: 5.2h).

• The average UV index in May: 12

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 9).