September weather forecast
Olopa, Guatemala

The first month of the autumn, September, is also a moderately hot month in Olopa, Guatemala, with temperature in the range of an average high of 29.5°C (85.1°F) and an average low of 18.7°C (65.7°F).

Temperature

September observes an average high-temperature of a still warm 29.5°C (85.1°F), marking an insignificant difference from August's 29.7°C (85.5°F). In September, Olopa encounters an average low-temperature of 18.7°C (65.7°F) during the night.

Heat index

In September, the average heat index is estimated at a fiery hot 37°C (98.6°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

The average relative humidity in September in Olopa is 83%.

Rainfall

In Olopa, during September, the rain falls for 23.2 days and regularly aggregates up to 98mm (3.86") of precipitation. In Olopa, during the entire year, the rain falls for 193.9 days and collects up to 636mm (25.04") of precipitation.

Daylight

In September, the average length of the day is 12h and 13min.
On the first day of September in Olopa, sunrise is at 05:45 and sunset at 18:09. On the last day of the month, sunrise is at 05:46 and sunset at 17:47 CST.

Sunshine

In Olopa, Guatemala, the average sunshine in September is 8.3h.

UV index

The average daily maximum UV index in September in Olopa, Guatemala, is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 6 during September translates into the following guidance:
Guard oneself from overexposure. Defence against sun injury is vital. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.