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
The average high-temperature during September is a still moderately hot 28.5°C (83.3°F), almost matching the conditions of the preceding month. Vara Blanca, during September nights, records a temperature marginally cooler than the daytime average, at a still warm 25.3°C (77.5°F).Heat index
For September, the heat index is computed to be a tropical 33°C (91.4°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', comes about by integrating the temperature readings with the humidity levels. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
Humidity
The average relative humidity in September is 79%.Rainfall
In Vara Blanca, in September, it is raining for 23.6 days, with typically 131mm (5.16") of accumulated precipitation. In Vara Blanca, during the entire year, the rain falls for 236.2 days and collects up to 1501mm (59.09") of precipitation.Daylight
The average length of the day in September is 12h and 11min.On the first day of September, sunrise is at 05:28 and sunset at 17:46. On the last day of the month, sunrise is at 05:26 and sunset at 17:28 CST.
Sunshine
In Vara Blanca, Costa Rica, the average sunshine in September is 8.9h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index in Vara Blanca, Costa Rica. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.Note: A daily maximum UV index of 7 in September translates into the following instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Vara Blanca?
What is the average humidity in September in Vara Blanca?
How much does it rain in Vara Blanca in September?
How many hours of daylight does Vara Blanca have in September?
What time are sunrise and sunset in September in Vara Blanca?
How many hours of sunshine does Vara Blanca have in September?
What is the month with the highest UV index in Vara Blanca?
When is the lowest UV index in Vara Blanca?
How high is the UV index in September in Vara Blanca?
Average temperature in September
Vara Blanca, Costa Rica
- Average high temperature in September: 28.5°C
The warmest month (with the highest average high temperature) is April (30.4°C).
The month with the lowest average high temperature is October (28.1°C).
- Average low temperature in September: 25.3°C
The months with the highest average low temperature are April and May (26.2°C).
The coldest month (with the lowest average low temperature) is January (24.5°C).
Average pressure in September
Vara Blanca, Costa Rica
- Average pressure in September: 1010.9mbar
The month with the highest atmospheric pressure is January (1011.4mbar).
The month with the lowest atmospheric pressure is November (1010.6mbar).
Average wind speed in September
Vara Blanca, Costa Rica
- Average wind speed in September: 7.7km/h
The windiest month (with the highest average wind speed) is March (9.7km/h).
The calmest month (with the lowest average wind speed) is June (7.6km/h).
Average humidity in September
Vara Blanca, Costa Rica
- Average humidity in September: 79%
The months with the highest relative humidity are June and October (80%).
The months with the lowest relative humidity are February and March (68%).
Average rainfall in September
Vara Blanca, Costa Rica
- Average rainfall in September: 131mm
The wettest month (with the highest rainfall) is October (383mm).
The driest month (with the least rainfall) is February (11mm).
Average rainfall days in September
Vara Blanca, Costa Rica
- Average rainfall days in September: 23.6 days
The month with the highest number of rainy days is October (26.1 days).
The month with the least rainy days is February (7.8 days).
Average daylight in September /
Average sunshine in September
Vara Blanca, 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is October (Average sunshine: 8h and 6min).
Average sunshine days in September
Vara Blanca, Costa Rica
- Average sunshine days in September: 5.9 days
The month with the most sunshine days is March (18.6 days).
The month with the least sunshine days is May (4.3 days).
Average UV index in September
Vara Blanca, Costa Rica
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Vara Blanca, Costa Rica
- Average cloud cover in September: 39
The month with the most cloud cover is October (Cloud cover 44).
The month with the least cloud cover is February (Cloud cover 13).
Average visibility in September
Vara Blanca, Costa Rica
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, June, July, August, September, November and December (10km).
The months with the lowest visibility are May and October (9km).
