nomadseason

September Weather in Santo Tomas, Nicaragua

Last updated: August 31, 2025

In September, the average temperature in Santo Tomas, Nicaragua is a warm 25°C (78°F), with daily fluctuations ranging from a minimum of 21°C (69°F) to a maximum of 33°C (91°F). However, be prepared for rain, as 210 mm (8.3 in) of precipitation is expected over 28 days, coupled with a high average humidity of 80%. Enjoy the balmy weather while staying dry!

September Temperature in Santo Tomas

In September in Santo Tomas, the average temperature is 25°C (78°F). Maximums can reach up to 33°C (91°F), while minimums can drop to as low as 21°C (69°F). This makes it a perfect time for travelers to enjoy warm weather and outdoor activities in Santo Tomas.

September Weather in Santo Tomas: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santo Tomas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santo Tomas, September typically has an average temperature of 25°C (78°F), with highs reaching up to 33°C (91°F) and lows dropping to around 21°C (69°F).
JanFebMarAprMayJunJulAugSepOctNovDec757677808078787878777776
Data source: Temperature data for Santo Tomas 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 Santo Tomas

In Santo Tomas in September, the precipitation amount is 210 mm (8.3 in) spread over 28 days.

September Precipitation Trends in Santo Tomas

The chart displays monthly precipitation patterns in Santo Tomas, 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 Santo Tomas, September typically receives around 210 mm (8.3 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec3029314424220612316121028312246
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Santo Tomas

In Santo Tomas in September, humidity is 80%. With an average temperature of 25°C (78°F), this humidity feels like a warm blanket enveloping you, making every outdoor activity feel more strenuous and steaming, while also causing you to seek out shade and refreshment more frequently.

September Average Humidity in Santo Tomas

This chart illustrates the average monthly humidity levels in Santo Tomas, 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 Santo Tomas is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec66%64%63%63%63%74%85%82%80%79%79%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santo Tomas

In Santo Tomas in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Santo Tomas.

Maximum UV Index Levels in Santo Tomas for September

The chart shows the monthly maximum UV Index (UVI) for Santo Tomas 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 Santo Tomas typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111314141413141313131110
Data source: Santo Tomas 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 Santo Tomas Compares to Other Months

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

This table compares monthly weather conditions in Santo Tomas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)29 mm (1.2 inches)66%extreme
February Weather25°C (77°F)29 mm (1.1 inches)64%extreme
March Weather25°C (78°F)31 mm (1.2 inches)63%extreme
April Weather27°C (80°F)44 mm (1.7 inches)63%extreme
May Weather26°C (80°F)242 mm (9.5 inches)63%extreme
June Weather26°C (79°F)206 mm (8.1 inches)74%extreme
July Weather25°C (78°F)123 mm (4.8 inches)85%extreme
August Weather25°C (78°F)161 mm (6.3 inches)82%extreme
September Weather25°C (78°F)210 mm (8.3 inches)80%extreme
October Weather25°C (77°F)282 mm (11.1 inches)79%extreme
November Weather25°C (77°F)122 mm (4.8 inches)79%extreme
December Weather24°C (76°F)45 mm (1.8 inches)70%very high

Compare Santo Tomas's Climate with Cities Worldwide