Kwajalein Weather in September

September in Kwajalein typically sees daytime highs of 29°C (84°F) and nighttime lows of 26°C (79°F). September falls within the rainy season, so heavy rainfall is to be expected.

Rainfall in Kwajalein in September

As part of the rainy season, Kwajalein sees around 20 days of rain in September, with an average of 295 mm (12 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.

Temperature in Kwajalein in September

In September, Kwajalein sees high temperatures, with highs of 29°C (84°F). Nights drop to around 26°C (79°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights remain warm at around 26°C (79°F). For a more comfortable sleep, a cold shower before bed and a fan or air conditioning can make a big difference.

Wind Speed in Kwajalein in September

Average wind speeds reach 3 m/s (6 knots) in September, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.

Average water temperature in September

The water is 29°C (84°F), very warm by most standards. Comfortable to swim in, but not particularly refreshing if you're looking to cool off.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Kwajalein. Our weather planner can help you explore destinations with more pleasant weather conditions.