Monterrico
Guatemala
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Monterrico, Guatemala

The first month of the autumn, September, is also a hot month in Monterrico, Guatemala, with average temperature varying between 22°C (71.6°F) and 32°C (89.6°F).

Temperature

June, August through November, with an average high-temperature of 32°C (89.6°F), are the coldest months.

Rainfall

The month with the most rainfall in Monterrico is September when the rain falls for 24 days and typically aggregates up to 354mm (13.9") of precipitation.

Sea temperature

In Monterrico, Guatemala, the average water temperature is 29°C (84.2°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The average length of the day in September is 12.2h.

Sunshine

The month with the least sunshine in Monterrico is September, with an average of 6h of sunshine.

UV index

February through September, 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 threat to health from unprotected exposure to the Sun's UV rays for ordinary individuals.
In September, the average maximum UV index of 12 translate into the following recommendations:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What are the coldest months in Monterrico?

The coldest months are June, August through November, with an average high-temperature of 32°C (89.6°F).

What is the temperature in September in Monterrico?

The average high-temperature, in September, in Monterrico, is 32°C (89.6°F), while the average low-temperature is 22°C (71.6°F).

How many days does it rain in September in Monterrico?

In Monterrico, in September, during 24 rainfall days, 354mm (13.9") of precipitation is typically accumulated.

What is the rainiest month in Monterrico?

The month with the most rainfall in Monterrico, Guatemala, is September when the rain falls for 24 days and typically aggregates up to 354mm (13.9") of precipitation.

What is the water temperature in September in Monterrico?

In Monterrico, Guatemala, the average seawater temperature in September is 29°C (84.2°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the average length of the day in September in Monterrico?

In September, the average length of the day in Monterrico, Guatemala, is 12.2h.

What is the month with the least sunshine in Monterrico?

The month with the least sunshine in Monterrico is September, with an average of 6h of sunshine.

How many hours of sunshine does Monterrico have in September?

In September, the average sunshine in Monterrico, Guatemala, is 6h.

What is the month with the highest UV index in Monterrico?

Months with the highest UV index in Monterrico are February through September, with an average maximum UV index of 12.

What is the UV index reading in September in Monterrico?

The average daily maximum UV index in September in Monterrico is 12. A UV Index value of 11, and more, symbolizes an excessive health risk from unprotected exposure to the UV radiation.
Average temperature in September - Monterrico, Guatemala
  • Average high temperature in September: 32°C

Warmest months (with the highest average high temperature) are March and April (34°C).
Months with the lowest average high temperature are June, August, September, October and November (32°C).

  • Average low temperature in September: 22°C

The month with the highest average low temperature is May (24°C).
Coldest months (with the lowest average low temperature) are January, February and December (21°C).

Average rainfall in September - Monterrico, Guatemala
  • Average rainfall in September: 354mm

The wettest month (with the highest rainfall) is September (354mm).
Driest months (with the lowest rainfall) are January and February (1mm).

Average rainfall days in September - Monterrico, Guatemala
  • Average rainfall days in September: 24 days

Months with the highest number of rainy days are June and September (24 days).
The month with the lowest number of rainy days is February (3 days).

Average sea temperature in September - Monterrico, Guatemala
  • Average sea temperature in September: 29°C

Best months for swimming (with the highest average sea temperature) are April, May, June and August (30°C).
Coldest months (with the lowest average sea temperature) are January and February (28°C).

Average daylight in September / Average sunshine in September - Monterrico, Guatemala
  • Average daylight in September: 12.2h

Months with the longest days are June and July (Average daylight: 12.9h).
The month with shortest days is December (Average daylight: 11.3h).

  • Average sunshine in September: 6h

Months with most sunshine are February, March, April and May (Average sunshine: 9h).
The month with least sunshine is September (Average sunshine: 6h).

Average UV index in September - Monterrico, Guatemala
  • Average UV index in September: 12

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