May weather forecast
Guatemala City, Guatemala

Guatemala City encounters a major shift in weather during May, with the highest rainfall volume recorded at 129mm (5.08"). The significant precipitation is a reflection of the effusive wet season. The increase in rainfall is coupled with the highest humidity throughout the year. Temperature variations are insignificant compared to April. Extremely high ultraviolet radiation exists despite the reduction in hours of sunshine.

Temperature

May's weather displays an average high-temperature of a still moderately hot 27.1°C (80.8°F), slightly varied from April's 27.8°C (82°F). During the May nights, an average temperature of 16.8°C (62.2°F) is observed.

Heat index

For most parts of May, the heat index is evaluated at a tropical 30°C (86°F). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.

Humidity

The average relative humidity in May is 77.3%.

Rainfall

In Guatemala City, in May, it is raining for 12.4 days, with typically 129mm (5.08") of accumulated precipitation. In Guatemala City, during the entire year, the rain falls for 125.2 days and collects up to 1275mm (50.2") of precipitation.

Daylight

In Guatemala City, the average length of the day in May is 12h and 49min.
On the first day of the month, sunrise is at 05:38 and sunset at 18:19. On the last day of May, in Guatemala City, sunrise is at 05:31 and sunset at 18:27 CST.

Sunshine

In May, the average sunshine is 5.9h.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an extreme health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 12 during May translates into these guidelines:
Put into effect every precaution of importance, unprotected skin and eyes may get burns swiftly. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Before exposing yourself to the Sun, apply sunscreen with 30 SPF or higher. This safeguards against sunburn and its harmful radiation.