Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
September's commencement is accompanied by an average high-temperature of a still moderately hot 25.7°C (78.3°F), diverging marginally from August's 26.5°C (79.7°F). Porvenir, during September nights, witnesses an average temperature marginally cooler than its daytime highs, at a pleasant 21.3°C (70.3°F).Humidity
The months with the highest humidity in Porvenir are September and October, with an average relative humidity of 86%.Rainfall
In Porvenir, in September, it is raining for 29.6 days, with typically 267mm (10.51") of accumulated precipitation. In Porvenir, Costa Rica, during the entire year, the rain falls for 290 days and collects up to 2270mm (89.37") of precipitation.Daylight
In September, the average length of the day is 12h and 10min.On the first day of September in Porvenir, sunrise is at 05:27 and sunset at 17:45. On the last day of the month, sunrise is at 05:25 and sunset at 17:28 CST.
Sunshine
In September, the average sunshine is 8.2h.UV index
The months with the highest UV index in Porvenir, Costa Rica, are January through December, with an average maximum UV index of 6. January through December, with an average maximum UV index of 6, are months with the lowest UV index in Porvenir, Costa Rica. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 6 in September translates into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Porvenir in September?
What are the most humid months in Porvenir?
What is the average humidity in September in Porvenir?
How much does it rain in Porvenir in September?
How many hours of daylight does Porvenir have in September?
When are sunrise and sunset in September in Porvenir?
How many hours of sunshine does Porvenir have in September?
What are the months with the highest UV index in Porvenir?
What is the month with the lowest UV index in Porvenir?
What is the UV index reading in September in Porvenir?
Average temperature in September
Porvenir, Costa Rica
- Average high temperature in September: 25.7°C
The warmest month (with the highest average high temperature) is March (29.3°C).
The month with the lowest average high temperature is October (25.3°C).
- Average low temperature in September: 21.3°C
The month with the highest average low temperature is April (21.9°C).
The coldest months (with the lowest average low temperature) are January, February and December (20.5°C).
Average pressure in September
Porvenir, Costa Rica
- Average pressure in September: 1011.1mbar
The month with the highest atmospheric pressure is January (1011.8mbar).
The months with the lowest atmospheric pressure are October and November (1010.9mbar).
Average wind speed in September
Porvenir, Costa Rica
- Average wind speed in September: 5.3km/h
The windiest months (with the highest average wind speed) are February and March (7.6km/h).
The calmest month (with the lowest average wind speed) is June (5.2km/h).
Average humidity in September
Porvenir, Costa Rica
- Average humidity in September: 86%
The months with the highest relative humidity are September and October (86%).
The months with the lowest relative humidity are February and March (68%).
Average rainfall in September
Porvenir, Costa Rica
- Average rainfall in September: 267mm
The wettest month (with the highest rainfall) is October (440mm).
The driest month (with the least rainfall) is February (18mm).
Average rainfall days in September
Porvenir, Costa Rica
- Average rainfall days in September: 29.6 days
The month with the highest number of rainy days is October (30.5 days).
The month with the least rainy days is February (9.7 days).
Average daylight in September /
Average sunshine in September
Porvenir, 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: 8h and 1min
The month with the most sunshine is February (Average sunshine: 9h and 48min).
The month with the least sunshine is October (Average sunshine: 7h and 30min).
Average sunshine days in September
Porvenir, Costa Rica
- Average sunshine days in September: 0.2 days
The month with the most sunshine days is February (13.7 days).
The month with the least sunshine days is September (0.2 days).
Average UV index in September
Porvenir, Costa Rica
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in September
Porvenir, Costa Rica
- Average cloud cover in September: 45
The month with the most cloud cover is October (Cloud cover 49).
The month with the least cloud cover is February (Cloud cover 15).
Average visibility in September
Porvenir, Costa Rica
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).
