nomadseason

September Weather in San Julian, Bolivia

Last updated: August 22, 2025

In September, the average temperature in San Julian, Bolivia is a warm 26°C (79°F). Visitors can expect a range from a cool 11°C (51°F) to a scorching 39°C (102°F). With 36 mm (1.4 in) of precipitation spread over 5 days, it’s wise to prepare for the occasional shower. The average humidity sits at a comfortable 39%, making for pleasant conditions overall.

September Temperature in San Julian

In September in San Julian, the average temperature is 26°C (79°F). Maximum temperatures can reach 39°C (102°F), while minimums can drop as low as 11°C (51°F). Prepare for a range of weather conditions to make the most of your travels!

September Weather in San Julian: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Julian, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Julian, September typically has an average temperature of 26°C (79°F), with highs reaching up to 39°C (102°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec807979777269707379818080
Data source: Temperature data for San Julian generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in San Julian

In San Julian in September, the precipitation amount is 36 mm (1.4 in) over the course of 5 days.

September Precipitation Trends in San Julian

The chart displays monthly precipitation patterns in San Julian, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In San Julian, September typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec1341159973664227553693145192
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in San Julian

In San Julian in September humidity is 39%. With an average temperature of 26°C (79°F), this humidity feels like a pleasant and comfortable warmth, making it ideal for exploring the outdoors and enjoying the sights without feeling sticky or overwhelmed by intense heat.

September Average Humidity in San Julian

This chart illustrates the average monthly humidity levels in San Julian, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in San Julian is approximately 39%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%86%86%79%64%47%40%39%39%70%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Julian

In San Julian in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in San Julian.

Maximum UV Index Levels in San Julian for September

The chart shows the monthly maximum UV Index (UVI) for San Julian in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in San Julian typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1515141310891012151616
Data source: San Julian September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in San Julian Compares to Other Months

Weather in San Julian varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Julian, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in San Julian, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (80°F)134 mm (5.3 inches)86%extreme
February Weather26°C (80°F)115 mm (4.5 inches)84%extreme
March Weather26°C (79°F)99 mm (3.9 inches)85%extreme
April Weather25°C (77°F)73 mm (2.9 inches)86%extreme
May Weather22°C (72°F)66 mm (2.6 inches)79%very high
June Weather20°C (69°F)42 mm (1.7 inches)64%very high
July Weather21°C (70°F)27 mm (1.0 inches)47%very high
August Weather23°C (73°F)55 mm (2.1 inches)40%very high
September Weather26°C (79°F)36 mm (1.4 inches)39%extreme
October Weather27°C (81°F)93 mm (3.7 inches)39%extreme
November Weather27°C (80°F)145 mm (5.7 inches)70%extreme
December Weather27°C (80°F)192 mm (7.6 inches)83%extreme

Compare San Julian's Climate with Cities Worldwide