September weather forecast
San Carlos, Bolivia

September

Weather in September

September, the first month of the spring in San Carlos, is a hot month, with temperature in the range of an average low of 19.7°C (67.5°F) and an average high of 31.9°C (89.4°F).

Temperature

San Carlos experiences a subtle adjustment in high-temperatures to a tropical 31.9°C (89.4°F) with the onset of September, maintaining near parity with August's 29°C (84.2°F). During September nights, San Carlos documents a marked contrast from daily highs, with an average temperature of 19.7°C (67.5°F).

Heat index

In September, the heat index is evaluated at a hot 34°C (93.2°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', arises from combining readings of air temperature and relative moisture content. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are primarily vital for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.

Humidity

The least humid month is September, with an average relative humidity of 51%.

Rainfall

In San Carlos, in September, it is raining for 7.7 days, with typically 25mm (0.98") of accumulated precipitation. Throughout the year, in San Carlos, Bolivia, there are 196.4 rainfall days, and 938mm (36.93") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 1min.
On the first day of the month, sunrise is at 06:21 and sunset at 18:08. On the last day of September, sunrise is at 05:57 and sunset at 18:12 -04.

Sunshine

In San Carlos, Bolivia, the average sunshine in September is 9.7h.

UV index

The months with the highest UV index in San Carlos are January, August through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 7 during September translates into the following guidance:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.

Frequently asked questions

How hot is it in San Carlos in September?
In September, the average high-temperature and low-temperature in San Carlos are 31.9°C (89.4°F) and 19.7°C (67.5°F) respectively. In September, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is evaluated at 34°C (93.2°F).
What is the least humid month in San Carlos?
The least humid month in San Carlos is September, with an average relative humidity of 51%.
What is the average humidity in September in San Carlos?
In September, the average relative humidity is 51%.
How much does it rain in San Carlos in September?
In San Carlos, Bolivia, in September, during 7.7 rainfall days, 25mm (0.98") of precipitation is typically accumulated.
How many hours of daylight does San Carlos have in September?
In San Carlos, the average day length in September is 12h and 1min.
When are sunrise and sunset in September in San Carlos?
In September, on the first day of the month, sunrise is at 06:21 and sunset at 18:08. On the last day of the month, in San Carlos, Bolivia, sunrise is at 05:57 and sunset at 18:12 -04.
How many hours of sunshine does San Carlos have in September?
In September, the average sunshine duration is 9.7h.
When is the highest UV index in San Carlos?
The months with the highest UV index in San Carlos are January, August through October, with an average maximum UV index of 7.
How high is the UV index in September in San Carlos?
The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
San Carlos, Bolivia
  • Average high temperature in September: 31.9°C

The warmest month (with the highest average high temperature) is October (32.5°C).
The month with the lowest average high temperature is June (24.9°C).

  • Average low temperature in September: 19.7°C

The months with the highest average low temperature are February and December (21.9°C).
The coldest month (with the lowest average low temperature) is July (15.7°C).

Average pressure in September
San Carlos, Bolivia
  • Average pressure in September: 1012mbar

The month with the highest atmospheric pressure is July (1015.3mbar).
The months with the lowest atmospheric pressure are November and December (1008.3mbar).

Average wind speed in September
San Carlos, Bolivia
  • Average wind speed in September: 12.4km/h

The windiest month (with the highest average wind speed) is September (12.4km/h).
The calmest month (with the lowest average wind speed) is March (8.6km/h).

Average humidity in September
San Carlos, Bolivia
  • Average humidity in September: 51%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is September (51%).

Average rainfall in September
San Carlos, Bolivia
  • Average rainfall in September: 25mm

The wettest month (with the highest rainfall) is December (141mm).
The driest month (with the least rainfall) is August (19mm).

Average rainfall days in September
San Carlos, Bolivia
  • Average rainfall days in September: 7.7 days

The month with the highest number of rainy days is January (24.5 days).
The month with the least rainy days is August (5.8 days).

Average daylight in September /
Average sunshine in September
San Carlos, Bolivia
  • Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 13h and 12min).
The month with the shortest days is June (Average daylight: 11h and 6min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is October (Average sunshine: 10h and 36min).
The month with the least sunshine is May (Average sunshine: 5h and 30min).

Average sunshine days in September
San Carlos, Bolivia
  • Average sunshine days in September: 20.5 days

The month with the most sunshine days is August (23.3 days).
The month with the least sunshine days is February (4.8 days).

Average UV index in September
San Carlos, Bolivia
  • Average UV index in September: 7

The months with the highest UV index are January, August, September and October (UV index 7).
The month with the lowest UV index is May (UV index 5).

Average cloud cover in September
San Carlos, Bolivia
  • Average cloud cover in September: 23

The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 23).

Average visibility in September
San Carlos, Bolivia
  • Average visibility in September: 10km

The months with the highest visibility are August, September and October (10km).
The months with the lowest visibility are January, February, March, April and May (8km).

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