September weather forecast
Portachuelo, Bolivia

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Weather in September

September witnesses a gradual return of warmth to Portachuelo with the high temperatures recording at 31.9°C (89.4°F). The month sees the first hints of impending change with a slight increase in rainfall. The gentle wind retains its steady pace, wafting away the residual chill of the preceding months. A steady UV index and unchanging pressure suggest the weather remains stable across the month. The city's flora begins to rejuvenate, gifting Portachuelo with a renewed sense of vibrancy.

Temperature

Portachuelo registers an average high-temperature of a tropical 31.9°C (89.4°F) at the commencement of September, closely related to the preceding month. Portachuelo logs a considerable temperature decrease from the daytime highs during the nights in September, with an average reading of 19.7°C (67.5°F).

Heat index

The average heat index in September is calculated to be a hot 34°C (93.2°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
Heat index data is primarily for areas with shade and subjected to light winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.

Humidity

September is the least humid month in Portachuelo, with an average relative humidity of 51%.

Rainfall

In Portachuelo, during September, the rain falls for 7.7 days and regularly aggregates up to 25mm (0.98") of precipitation. In Portachuelo, Bolivia, during the entire year, the rain falls for 196.4 days and collects up to 938mm (36.93") of precipitation.

Daylight

In September, the average length of the day is 12h and 1min.
On the first day of September, sunrise is at 06:19 and sunset at 18:06. On the last day of the month, sunrise is at 05:55 and sunset at 18:10 -04.

Sunshine

In September, the average sunshine is 9.7h.

UV index

January, August through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: An average UV index of 7 in September transforms into this advice:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. 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. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

Frequently asked questions

Is it hot during September?

In September, the average high-temperature and low-temperature in Portachuelo are 31.9°C (89.4°F) and 19.7°C (67.5°F) respectively. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in September is calculated to be 34°C (93.2°F).

What is the least humid month?

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

What is the average humidity in September?

The average relative humidity in September is 51%.

How many days does it rain in September?

In Portachuelo, during September, the rain falls for 7.7 days and regularly aggregates up to 25mm (0.98") of precipitation.

What is the average length of the day in September?

The average day length in September is 12h and 1min.

What time are sunrise and sunset in September?

On the first day of September in Portachuelo, sunrise is at 06:19 and sunset at 18:06. On the last day of the month, sunrise is at 05:55 and sunset at 18:10 -04.

How long on average sun shines in September?

In September, the average sunshine duration is 9.7h.

When is the highest UV index?

January, August through October, with an average maximum UV index of 7, are months with the highest UV index.

How high is the UV index in September?

In September, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.

Average temperature in September
Portachuelo, Bolivia

Average temperature in September - Portachuelo, 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
Portachuelo, Bolivia

Average pressure in September - Portachuelo, 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
Portachuelo, Bolivia

Average wind speed in September - Portachuelo, 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
Portachuelo, Bolivia

Average humidity in September - Portachuelo, 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
Portachuelo, Bolivia

Average rainfall in September - Portachuelo, 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
Portachuelo, Bolivia

Average rainfall days in September - Portachuelo, 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
Portachuelo, Bolivia

Average daylight in September / Average sunshine in September - Portachuelo, Bolivia
  • Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 13h and 6min).
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
Portachuelo, Bolivia

Average sunshine days in September - Portachuelo, 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
Portachuelo, Bolivia

Average UV index in September - Portachuelo, 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
Portachuelo, Bolivia

Average cloud cover in September - Portachuelo, 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
Portachuelo, Bolivia

Average visibility in September - Portachuelo, 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).

Portachuelo, Bolivia

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