June weather forecast
San Bernardino, Guatemala

June, the first month of the summer in San Bernardino, is also a moderately hot month, with an average temperature fluctuating between 19.9°C (67.8°F) and 29.3°C (84.7°F).

Temperature

San Bernardino experiences a recorded average high-temperature of a moderately hot 29.3°C (84.7°F) in June, closely aligned with May's 30°C (86°F). The temperature dips to an average of 19.9°C (67.8°F) during June nights.

Heat index

June's mean heat index is evaluated at a very hot 35°C (95°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In San Bernardino, the average relative humidity in June is 77%.

Rainfall

In San Bernardino, in June, during 26.8 rainfall days, 242mm (9.53") of precipitation is typically accumulated. Throughout the year, there are 222.8 rainfall days, and 1491mm (58.7") of precipitation is accumulated.

Daylight

June has the longest days of the year in San Bernardino, with an average of 13h and 0min of daylight.
On the first day of the month, sunrise is at 05:35 and sunset at 18:31. On the last day of June, in San Bernardino, sunrise is at 05:40 and sunset at 18:38 CST.

Sunshine

In San Bernardino, the average sunshine in June is 10.5h.

UV index

January through December, with an average maximum UV index of 6, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 6 in June interprets into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.