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September Weather in Rongelap, Marshall Islands

Last updated: August 23, 2025

In Rongelap, Marshall Islands, the average temperature in September is a warm 28°C (82°F), with a minimum of 26°C (78°F) and a maximum of 29°C (85°F). Be prepared for some rain, as precipitation amounts to 207 mm (8.2 in) spread over 27 days, and expect humidity levels to linger around 78%.

September Temperature in Rongelap

In September in Rongelap, the average temperature is 28°C (82°F). Maximums can reach 29°C (85°F), while minimums can drop to as low as 26°C (78°F). This comfortable climate makes Rongelap an ideal destination for travelers seeking pleasant weather during this time of the year.

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

The chart illustrates September temperature patterns in Rongelap, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rongelap, September typically has an average temperature of 28°C (82°F), with highs reaching up to 29°C (85°F) and lows dropping to around 26°C (78°F).
JanFebMarAprMayJunJulAugSepOctNovDec808080818181818282818181
Data source: Temperature data for Rongelap 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 Rongelap

In Rongelap in September, the precipitation amount is 207 mm (8.2 in) over the course of 27 days.

September Precipitation Trends in Rongelap

The chart displays monthly precipitation patterns in Rongelap, 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 Rongelap, September typically receives around 207 mm (8.2 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec4228888211611015220120725621772
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rongelap

In Rongelap in September humidity is 78%. With an average temperature of 28°C (82°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel more exhausting and overwhelming, potentially leading to a slower pace while exploring.

September Average Humidity in Rongelap

This chart illustrates the average monthly humidity levels in Rongelap, 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 Rongelap is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%81%82%83%81%80%78%77%78%78%80%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rongelap

In Rongelap in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Rongelap, you can check here.

Maximum UV Index Levels in Rongelap for September

The chart shows the monthly maximum UV Index (UVI) for Rongelap 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 Rongelap typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121315141413131414131110
Data source: Rongelap 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 Rongelap Compares to Other Months

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

This table compares monthly weather conditions in Rongelap, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (80°F)42 mm (1.7 inches)82%extreme
February Weather27°C (80°F)28 mm (1.1 inches)81%extreme
March Weather27°C (80°F)88 mm (3.5 inches)82%extreme
April Weather27°C (81°F)82 mm (3.2 inches)83%extreme
May Weather27°C (81°F)115 mm (4.5 inches)81%extreme
June Weather27°C (82°F)110 mm (4.3 inches)80%extreme
July Weather27°C (82°F)152 mm (6.0 inches)78%extreme
August Weather28°C (82°F)201 mm (7.9 inches)77%extreme
September Weather28°C (82°F)207 mm (8.2 inches)78%extreme
October Weather27°C (82°F)256 mm (10.1 inches)78%extreme
November Weather27°C (82°F)217 mm (8.5 inches)80%extreme
December Weather27°C (81°F)72 mm (2.8 inches)82%very high

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