September weather forecastAmatitlán, Guatemala
September
Weather in September
In September, Amatitlán experiences it's most humid conditions. The rainfall remains high, and wind speed drops even further intensifying the weighty, moist atmosphere. Still, the respite is near, with a subtle increase in sunlight hours hinting at the end of the heavy rain period. There is a noticeable rise in relative humidity, making the days feel heavier. The precipitation peaks in September, with rainfall of 269mm (10.59") - the highest for the entire year.Temperature
The transition into September is marked with an average high-temperature of a still moderately hot 23.4°C (74.1°F), showing an insignificant shift from August's 24.2°C (75.6°F). During September nights, Amatitlán witnesses a consistent average temperature of 15°C (59°F).Humidity
With an average relative humidity of 90%, September is the most humid month in Amatitlán.Rainfall
In September, the rain falls for 28.7 days. Throughout September, 269mm (10.59") of precipitation is accumulated. Throughout the year, in Amatitlán, there are 231.3 rainfall days, and 1656mm (65.2") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 13min.On the first day of the month, sunrise is at 05:50 and sunset at 18:14. On the last day of September, sunrise is at 05:52 and sunset at 17:52 CST.
Sunshine
In Amatitlán, the average sunshine in September is 7.7h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 5 in September translates into these instructions:
Heed the precautions - Suggestions to avoid sunburn are made. Minimize direct exposure to the Sun during midday when its radiation is at its peak. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Amatitlán, Guatemala
- Average high temperature in September: 23.4°C
The warmest month (with the highest average high temperature) is April (27.3°C).
The month with the lowest average high temperature is October (22.5°C).
- Average low temperature in September: 15°C
The month with the highest average low temperature is May (16.5°C).
The coldest month (with the lowest average low temperature) is January (11.8°C).
Average pressure in September
Amatitlán, Guatemala
- Average pressure in September: 1012.6mbar
The month with the highest atmospheric pressure is January (1015.5mbar).
The month with the lowest atmospheric pressure is May (1012.5mbar).
Average wind speed in September
Amatitlán, Guatemala
- Average wind speed in September: 5.9km/h
The windiest month (with the highest average wind speed) is January (12.8km/h).
The calmest month (with the lowest average wind speed) is September (5.9km/h).
Average humidity in September
Amatitlán, Guatemala
- Average humidity in September: 90%
The month with the highest relative humidity is September (90%).
The month with the lowest relative humidity is March (69%).
Average rainfall in September
Amatitlán, Guatemala
- Average rainfall in September: 269mm
The wettest month (with the highest rainfall) is May (285mm).
The driest month (with the least rainfall) is January (7mm).
Average rainfall days in September
Amatitlán, Guatemala
- Average rainfall days in September: 28.7 days
The month with the highest number of rainy days is September (28.7 days).
The month with the least rainy days is January (6.7 days).
Average daylight in September /
Average sunshine in September
Amatitlán, Guatemala
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in September: 7h and 42min
The month with the most sunshine is April (Average sunshine: 11h and 18min).
The month with the least sunshine is October (Average sunshine: 7h and 24min).
Average sunshine days in September
Amatitlán, Guatemala
- Average sunshine days in September: 0.9 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is September (0.9 days).
Average UV index in September
Amatitlán, Guatemala
- Average UV index in September: 5
The months with the highest UV index are March and April (UV index 6).
The months with the lowest UV index are August and October (UV index 4).
Average cloud cover in September
Amatitlán, Guatemala
- Average cloud cover in September: 59
The months with the most cloud cover are June and September (Cloud cover 59).
The months with the least cloud cover are January, February and March (Cloud cover 26).
Average visibility in September
Amatitlán, Guatemala
- Average visibility in September: 6km
The month with the highest visibility is March (10km).
The month with the lowest visibility is September (6km).
