September weather forecast
Sabalito, Costa Rica

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Sabalito, Costa Rica, with temperature in the range of an average high of 28.4°C (83.1°F) and an average low of 21.9°C (71.4°F).

Temperature

Sabalito records an average high-temperature of a still moderately hot 28.4°C (83.1°F) in September, closely mirroring the climate of the previous month. During September, Sabalito experiences a consistent low-temperature average of 21.9°C (71.4°F).

Heat index

In September, the average heat index is evaluated at a tropical 34°C (93.2°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

The average relative humidity in September in Sabalito is 85%.

Rainfall

In September, the rain falls for 28.6 days. Throughout September, 183mm (7.2") of precipitation is accumulated. Throughout the year, there are 309.5 rainfall days, and 2106mm (82.91") of precipitation is accumulated.

Daylight

In Sabalito, the average length of the day in September is 12h and 10min.
On the first day of September in Sabalito, sunrise is at 05:23 and sunset at 17:39. On the last day of the month, sunrise is at 05:19 and sunset at 17:22 CST.

Sunshine

In Sabalito, the average sunshine in September is 8.7h.

UV index

The months with the lowest UV index are January, February, June through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Boost your sun resistance with garments that are densely woven yet spacious.
Updated: Jan 26, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

Is it hot in Sabalito during September?

In September, the average high-temperature and low-temperature in Sabalito are 28.4°C (83.1°F) and 21.9°C (71.4°F) respectively. The average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in September is evaluated at 34°C (93.2°F).

What is the average humidity in September in Sabalito?

In Sabalito, the average relative humidity in September is 85%.

How many days does it rain in September in Sabalito?

In Sabalito, Costa Rica, during September, the rain falls for 28.6 days and regularly aggregates up to 183mm (7.2") of precipitation.

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

In Sabalito, Costa Rica, the average day length in September is 12h and 10min.

What time are sunrise and sunset in September in Sabalito?

On the first day of September in Sabalito, Costa Rica, sunrise is at 05:23 and sunset at 17:39. On the last day of the month, sunrise is at 05:19 and sunset at 17:22 CST.

How many hours of sunshine does Sabalito have in September?

In September, the average sunshine duration in Sabalito, Costa Rica, is 8.7h.

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

The months with the lowest UV index are January, February, June through December, with an average maximum UV index of 6.

What is the UV index reading in September in Sabalito?

In Sabalito, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Sabalito, Costa Rica

Average temperature in September - Sabalito, Costa Rica
  • Average high temperature in September: 28.4°C

The warmest month (with the highest average high temperature) is March (31.7°C).
The month with the lowest average high temperature is October (27.6°C).

  • Average low temperature in September: 21.9°C

The month with the highest average low temperature is May (22.7°C).
The coldest month (with the lowest average low temperature) is January (20.5°C).

Average pressure in September
Sabalito, Costa Rica

Average pressure in September - Sabalito, Costa Rica
  • Average pressure in September: 1011.1mbar

The month with the highest atmospheric pressure is January (1011.6mbar).
The months with the lowest atmospheric pressure are October and November (1010.8mbar).

Average wind speed in September
Sabalito, Costa Rica

Average wind speed in September - Sabalito, Costa Rica
  • Average wind speed in September: 4.9km/h

The windiest month (with the highest average wind speed) is March (6km/h).
The calmest months (with the lowest average wind speed) are July and August (4.5km/h).

Average humidity in September
Sabalito, Costa Rica

Average humidity in September - Sabalito, Costa Rica
  • Average humidity in September: 85%

The months with the highest relative humidity are October and November (86%).
The month with the lowest relative humidity is March (72%).

Average rainfall in September
Sabalito, Costa Rica

Average rainfall in September - Sabalito, Costa Rica
  • Average rainfall in September: 183mm

The wettest month (with the highest rainfall) is October (286mm).
The driest month (with the least rainfall) is February (34mm).

Average rainfall days in September
Sabalito, Costa Rica

Average rainfall days in September - Sabalito, Costa Rica
  • Average rainfall days in September: 28.6 days

The month with the highest number of rainy days is July (30.7 days).
The month with the least rainy days is February (14.3 days).

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

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

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

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is February (Average sunshine: 9h and 36min).
The month with the least sunshine is October (Average sunshine: 7h and 36min).

Average sunshine days in September
Sabalito, Costa Rica

Average sunshine days in September - Sabalito, Costa Rica
  • Average sunshine days in September: 1 days

The month with the most sunshine days is January (9.1 days).
The month with the least sunshine days is August (0.1 days).

Average UV index in September
Sabalito, Costa Rica

Average UV index in September - Sabalito, Costa Rica
  • Average UV index in September: 6

The months with the highest UV index are March, April and May (UV index 7).
The months with the lowest UV index are January, February, June, July, August, September, October, November and December (UV index 6).

Average cloud cover in September
Sabalito, Costa Rica

Average cloud cover in September - Sabalito, Costa Rica
  • Average cloud cover in September: 43

The month with the most cloud cover is October (Cloud cover 49).
The month with the least cloud cover is February (Cloud cover 19).

Average visibility in September
Sabalito, Costa Rica

Average visibility in September - Sabalito, Costa Rica
  • Average visibility in September: 9km

The months with the highest visibility are January, February, March and April (10km).
The month with the lowest visibility is November (8km).

Sabalito, Costa Rica

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