September weather forecast
Ujarrás, Costa Rica

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Weather in September

September in Ujarrás, Costa Rica marks a high point in the region’s wet season. The rainfall further intensifies, marking the average at 320mm (12.6"), making the month noticeably wetter. Constant temperatures remain the norm, balancing the extended bouts of rain and high humidity. Daylight and sunshine hours continue to display little fluctuation from previous months, indicating a lasting tropical climate. In this wet and warm ambience, wind speeds remain relatively low.

Temperature

Ujarrás, Costa Rica, registers an average high-temperature of a pleasant 22.9°C (73.2°F) with the arrival of September, showing minor deviation from the preceding month. The average low-temperature during September nights is a refreshing 16.5°C (61.7°F).

Humidity

In Ujarrás, Costa Rica, the average relative humidity in September is 89%.

Rainfall

In Ujarrás, in September, it is raining for 29.7 days, with typically 320mm (12.6") of accumulated precipitation. Throughout the year, in Ujarrás, there are 305 rainfall days, and 2534mm (99.76") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 11min.
On the first day of September, sunrise is at 05:26 and sunset at 17:44. On the last day of the month, sunrise is at 05:23 and sunset at 17:26 CST.

Sunshine

In Ujarrás, the average sunshine in September is 7.3h.

UV index

January through December, with an average maximum UV index of 5, are months with the highest UV index in Ujarrás. The months with the lowest UV index are January through December, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

What is the usual temperature for Ujarrás in September?

The average high-temperature, in September, in Ujarrás, is 22.9°C (73.2°F), while the average low-temperature is 16.5°C (61.7°F).

What is the average humidity in September in Ujarrás?

In Ujarrás, the average relative humidity in September is 89%.

How many days does it rain in September in Ujarrás?

In September, in Ujarrás, Costa Rica, the rain falls for 29.7 days. Throughout September, 320mm (12.6") of precipitation is accumulated.

How many hours of daylight does Ujarrás have in September?

In Ujarrás, the average day length in September is 12h and 11min.

When is the sunrise / sunset in September in Ujarrás?

In September, on the first day of the month, sunrise is at 05:26 and sunset at 17:44. On the last day of the month, sunrise is at 05:23 and sunset at 17:26 CST.

How long on average sun shines in September in Ujarrás?

The average sunshine duration in September in Ujarrás, Costa Rica, is 7.3h.

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

January through December, with an average maximum UV index of 5, are months with the highest UV index.

What are the months with the lowest UV index in Ujarrás?

The months with the lowest UV index in Ujarrás, Costa Rica, are January through December, with an average maximum UV index of 5.

How high is the UV index in September in Ujarrás?

In September, the average daily maximum UV index in Ujarrás, Costa Rica, is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.

Average temperature in September
Ujarrás, Costa Rica

Average temperature in September - Ujarrás, Costa Rica
  • Average high temperature in September: 22.9°C

The warmest month (with the highest average high temperature) is April (25.3°C).
The month with the lowest average high temperature is October (22.2°C).

  • Average low temperature in September: 16.5°C

The month with the highest average low temperature is May (16.9°C).
The coldest month (with the lowest average low temperature) is January (13.7°C).

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Average pressure in September
Ujarrás, Costa Rica

Average pressure in September - Ujarrás, Costa Rica
  • Average pressure in September: 1011.2mbar

The month with the highest atmospheric pressure is January (1012.4mbar).
The month with the lowest atmospheric pressure is October (1010.9mbar).

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Average wind speed in September
Ujarrás, Costa Rica

Average wind speed in September - Ujarrás, Costa Rica
  • Average wind speed in September: 3.7km/h

The windiest month (with the highest average wind speed) is February (8.6km/h).
The calmest month (with the lowest average wind speed) is September (3.7km/h).

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Average humidity in September
Ujarrás, Costa Rica

Average humidity in September - Ujarrás, Costa Rica
  • Average humidity in September: 89%

The month with the highest relative humidity is October (90%).
The month with the lowest relative humidity is February (76%).

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Average rainfall in September
Ujarrás, Costa Rica

Average rainfall in September - Ujarrás, Costa Rica
  • Average rainfall in September: 320mm

The wettest month (with the highest rainfall) is October (444mm).
The driest month (with the least rainfall) is February (33mm).

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Average rainfall days in September
Ujarrás, Costa Rica

Average rainfall days in September - Ujarrás, Costa Rica
  • Average rainfall days in September: 29.7 days

The month with the highest number of rainy days is October (30.5 days).
The month with the least rainy days is February (14.9 days).

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Average daylight in September /
Average sunshine in September
Ujarrás, Costa Rica

Average daylight in September / Average sunshine in September - Ujarrás, Costa Rica
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).

  • Average sunshine in September: 7h and 2min

The month with the most sunshine is February (Average sunshine: 9h and 6min).
The month with the least sunshine is October (Average sunshine: 6h and 30min).

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Average sunshine days in September
Ujarrás, Costa Rica

Average sunshine days in September - Ujarrás, Costa Rica
  • Average sunshine days in September: 0.3 days

The month with the most sunshine days is February (10.4 days).
The month with the least sunshine days is October (0.1 days).

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Average UV index in September
Ujarrás, Costa Rica

Average UV index in September - Ujarrás, Costa Rica
  • Average UV index in September: 5

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).

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Average cloud cover in September
Ujarrás, Costa Rica

Average cloud cover in September - Ujarrás, Costa Rica
  • Average cloud cover in September: 56

The month with the most cloud cover is October (Cloud cover 61).
The month with the least cloud cover is February (Cloud cover 31).

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Average visibility in September
Ujarrás, Costa Rica

Average visibility in September - Ujarrás, Costa Rica
  • Average visibility in September: 6km

The months with the highest visibility are January, February and March (9km).
The months with the lowest visibility are September and October (6km).

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Ujarrás, Costa Rica

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