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September Weather in Roja, Latvia

Last updated: August 23, 2025

In Roja, Latvia, the average temperature for September hovers around 14°C (58°F). During this time, you can expect temperatures to range from a cool 5°C (42°F) to a warm 24°C (75°F). With an average precipitation of 79 mm (3.1 in) falling over 14 days, humidity levels remain high at 87%, creating a moist and vibrant atmosphere.

September Temperature in Roja

In September in Roja, the average temperature is 14°C (58°F). Maximum temperatures can reach 24°C (75°F), while minimums can drop as low as 5°C (42°F). This pleasant climate makes Roja an ideal destination for travelers seeking moderate weather during this month.

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

The chart illustrates September temperature patterns in Roja, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Roja, September typically has an average temperature of 14°C (58°F), with highs reaching up to 24°C (75°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec323134415061656457504235
Data source: Temperature data for Roja 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 Roja

In Roja in September, the total precipitation amount is 79 mm (3.1 in) over a span of 14 days.

September Precipitation Trends in Roja

The chart displays monthly precipitation patterns in Roja, 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 Roja, September typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec434148364254768779917556
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Roja

In Roja in September humidity is 87%. With an average temperature of 14°C (58°F), this humidity feels like walking through a thick, warm blanket, making travel feel more exhausting and sticky, as sweat clings to the skin and the air feels heavy.

September Average Humidity in Roja

This chart illustrates the average monthly humidity levels in Roja, 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 Roja is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%91%90%87%72%76%76%80%87%91%92%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Roja

In Roja in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Roja for better planning.

Maximum UV Index Levels in Roja for September

The chart shows the monthly maximum UV Index (UVI) for Roja 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 Roja typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123467764211
Data source: Roja 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 Roja Compares to Other Months

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

This table compares monthly weather conditions in Roja, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)43 mm (1.7 inches)93%low
February Weather0°C (31°F)41 mm (1.6 inches)91%low
March Weather1°C (35°F)48 mm (1.9 inches)90%moderate
April Weather5°C (41°F)36 mm (1.4 inches)87%moderate
May Weather10°C (50°F)42 mm (1.7 inches)72%high
June Weather16°C (61°F)54 mm (2.1 inches)76%high
July Weather18°C (65°F)76 mm (3.0 inches)76%high
August Weather18°C (64°F)87 mm (3.4 inches)80%high
September Weather14°C (58°F)79 mm (3.1 inches)87%moderate
October Weather10°C (50°F)91 mm (3.6 inches)91%low
November Weather6°C (42°F)75 mm (3.0 inches)92%low
December Weather1°C (35°F)56 mm (2.2 inches)93%low

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