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September Weather in Sarteneja, Belize

Last updated: August 22, 2025

In September, the average temperature in Sarteneja, Belize hovers around 28°C (83°F). While you can expect a minimum of 23°C (74°F), the maximum can reach a warm 35°C (95°F). Be prepared for lush conditions, as precipitation measures about 191 mm (7.5 in) over 26 days of the month, coupled with a high average humidity of 85%.

September Temperature in Sarteneja

In September in Sarteneja, the average temperature is 28°C (83°F). Maximum temperatures can reach 35°C (95°F), while the minimum can drop to as low as 23°C (74°F). This warm climate makes Sarteneja an ideal destination for travelers seeking pleasant weather and outdoor activities.

September Weather in Sarteneja: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sarteneja, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sarteneja, September typically has an average temperature of 28°C (83°F), with highs reaching up to 35°C (95°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec767879828383838383817877
Data source: Temperature data for Sarteneja generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Sarteneja

In Sarteneja in September, the precipitation amount is 191 mm (7.5 in) spread over 26 days.

September Precipitation Trends in Sarteneja

The chart displays monthly precipitation patterns in Sarteneja, 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 Sarteneja, September typically receives around 191 mm (7.5 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec663533388726012516719125213764
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sarteneja

In Sarteneja in September humidity is 85%. With an average temperature of 28°C (83°F), this humidity feels like an enveloping blanket, making traveling quite sticky and exhausting, as the air thickens and makes every movement feel laborious.

September Average Humidity in Sarteneja

This chart illustrates the average monthly humidity levels in Sarteneja, 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 Sarteneja is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%80%69%64%63%62%65%78%86%87%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sarteneja

In Sarteneja 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 Sarteneja.

Maximum UV Index Levels in Sarteneja for September

The chart shows the monthly maximum UV Index (UVI) for Sarteneja 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 Sarteneja typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131413131313131298
Data source: Sarteneja 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 Sarteneja Compares to Other Months

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

This table compares monthly weather conditions in Sarteneja, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)66 mm (2.6 inches)85%very high
February Weather26°C (78°F)35 mm (1.4 inches)80%extreme
March Weather26°C (80°F)33 mm (1.3 inches)69%extreme
April Weather28°C (82°F)38 mm (1.5 inches)64%extreme
May Weather28°C (84°F)87 mm (3.4 inches)63%extreme
June Weather28°C (83°F)260 mm (10.2 inches)62%extreme
July Weather28°C (83°F)125 mm (4.9 inches)65%extreme
August Weather29°C (84°F)167 mm (6.6 inches)78%extreme
September Weather28°C (83°F)191 mm (7.5 inches)85%extreme
October Weather27°C (81°F)252 mm (9.9 inches)87%extreme
November Weather26°C (78°F)137 mm (5.4 inches)88%very high
December Weather25°C (77°F)64 mm (2.5 inches)88%very high

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