September weather forecast and climate
Liberia, Costa Rica

The first month of the autumn, September, is also a hot month in Liberia, Costa Rica, with average temperature ranging between max. 31.3°C (88.3°F) and min. 22.4°C (72.3°F).

Temperature

The average high-temperature, in Liberia, is 31.3°C (88.3°F), while the average low-temperature is 22.4°C (72.3°F).

Humidity

In September, the average relative humidity is 85.4%.

Rainfall

The month with the most rainfall is September when the rain falls for 17 days and typically aggregates up to 346.3mm (13.6") of precipitation.

Daylight

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

Sunshine

With an average of 5.3h of sunshine, September has the least sunshine of the year.

UV index

Months with the highest UV index are February through October, with an average UV index of 12.

What is the temperature in September in Liberia?

In September, the average high-temperature is 31.3°C (88.3°F), and the average low-temperature is 22.4°C (72.3°F).

What is the average humidity in September in Liberia?

In September, the average relative humidity in Liberia is 85.4%.

How many days does it rain in September in Liberia?

In Liberia, in September, during 17 rainfall days, 346.3mm (13.6") of precipitation is typically accumulated.

What is the rainiest month in Liberia?

September is the month with the most rainfall. Rain falls for 17 days and accumulates 346.3mm (13.6") of precipitation.

How many hours of daylight does Liberia have in September?

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

What is the month with the least sunshine in Liberia?

September has the least sunshine of the year in Liberia, Costa Rica, with an average of 5.3h of sunshine.

How many hours of sunshine does Liberia have in September?

In September, the average sunshine is 5.3h.

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

Months with the highest UV index in Liberia, Costa Rica, are February through October, with an average UV index of 12.

What is the UV index reading in September in Liberia?

In September, the average UV index in Liberia, Costa Rica, is 12.
Average temperature in September - Liberia, Costa Rica
  • Average high temperature in September: 31.3°C

The warmest month (with the highest average high temperature) is April (35.9°C).
The month with the lowest average high temperature is October (30.9°C).

  • Average low temperature in September: 22.4°C

The month with the highest average low temperature is May (23.4°C).
The coldest month (with the lowest average low temperature) is January (20.7°C).

Average humidity in September - Liberia, Costa Rica
  • Average humidity in September: 85.4%

The month with the highest relative humidity is October (86.1%).
The month with the lowest relative humidity is March (60.5%).

Average rainfall in September - Liberia, Costa Rica
  • Average rainfall in September: 346.3mm

The wettest month (with the highest rainfall) is September (346.3mm).
The driest month (with the lowest rainfall) is January (1.3mm).

Average rainfall days in September - Liberia, Costa Rica
  • Average rainfall days in September: 17 days

The month with the highest number of rainy days is September (17 days).
Months with the lowest number of rainy days are January, February and March (0 days).

Average daylight in September / Average sunshine in September - Liberia, Costa Rica
  • Average daylight in September: 12.2h

Months with the longest days are June and July (Average daylight: 12.7h).
The month with shortest days is December (Average daylight: 11.5h).

  • Average sunshine in September: 5.3h

The month with most sunshine is February (Average sunshine: 9.9h).
The month with least sunshine is September (Average sunshine: 5.3h).

Average UV index in September - Liberia, Costa Rica
  • Average UV index in September: 12

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).

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