Northern Mariana Islands (Saipan)
September
Weather in Northern Mariana Islands for September 2025
Your guide to Northern Mariana Islands weather in September - trends and predictions
Until now, September 2025 in Northern Mariana Islands has been nearly identical to the historical average, with a temperature of 28.9 °C (showing only a slight deviation of -0.1 °C).
The forecast for the next days in Northern Mariana Islands predicts temperatures to be around 29 °C, close to the historical average.
In general, the average temperature in Northern Mariana Islands at the beginning of September is 29 °C. As the month progressed, temperatures tended to remain steady, reaching an average of 29 °C by the end of September.
Northern Mariana Islands experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 478.8 mm.
Temperatures
Rain 🌧️
0
Dry days
30
Rainy days
0
Snow days
29°/28°
Temperatures
27 km/h
Avg max wind
78 %
Avg humidity
Northern Mariana Islands Weather September
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What’s the Weather Like in Northern Mariana Islands This September?
Discover the average temperatures and weather trends across Northern Mariana Islands’s cities this September.
Temperatures trend during September in Northern Mariana Islands
See the weather trend as well as the moving average line
September weather in Northern Mariana Islands day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Moderate or heavy rain shower | 29° /26° | 25.7 mm | 6 | |
| 2 Sept. | Moderate or heavy rain shower | 29° /27° | 22.3 mm | 6 | |
| 3 Sept. | Moderate or heavy rain shower | 29° /27° | 9.6 mm | 6 | |
| 4 Sept. |  Patchy rain possible | 29° /27° | 6.6 mm | 6 | |
| 5 Sept. |  Patchy light rain with thunder | 29° /27° | 9.8 mm | 6 | |
| 6 Sept. | Patchy light rain with thunder | 29° /28° | 13.4 mm | 6 | |
| 7 Sept. | Patchy rain possible | 29° /28° | 5 mm | 6 | |
| 8 Sept. | Light rain shower | 29° /28° | 6.4 mm | 6 | |
| 9 Sept. | Light rain shower | 29° /28° | 10.9 mm | 6 | |
| 10 Sept. | Light rain shower | 29° /27° | 19.7 mm | 6 | |
| 11 Sept. |  Torrential rain shower | 29° /27° | 43.9 mm | 6 | |
| 12 Sept. | Moderate or heavy rain shower | 29° /27° | 49.3 mm | 6 | |
| 13 Sept. |  Cloudy | 29° /26° | 20.5 mm | 6 | |
| 14 Sept. | Cloudy | 29° /27° | 9.9 mm | 6 | |
| 15 Sept. |  Partly cloudy | 28° /27° | 16.1 mm | 7 | |
| 16 Sept. | Heavy rain | 28° /25° | 65.9 mm | 0.7 | |
| 17 Sept. | Heavy rain | 26° /25° | 25.2 mm | 0.5 | |
| 18 Sept. | Patchy rain possible | 29° /28° | 3.7 mm | 1.3 | |
| 19 Sept. |  Moderate rain | 29° /28° | 12.8 mm | 1.8 | |
| 20 Sept. | Moderate rain | 29° /28° | 7.8 mm | 2.7 | |
| 21 Sept. | Patchy rain possible | 29° /28° | 3.5 mm | 6 | |
| 22 Sept. | Patchy rain possible | 29° /28° | 3.3 mm | 6 | |
| 23 Sept. | Patchy rain possible | 29° /28° | 2.1 mm | 6 | |
| 24 Sept. | Patchy rain possible | 29° /28° | 4 mm | 6 | |
| 25 Sept. | Patchy rain possible | 29° /28° | 0.2 mm | 6 | |
| 26 Sept. | Patchy rain possible | 29° /29° | 0.3 mm | 6 | |
| 27 Sept. | Patchy rain possible | 29° /28° | 2.6 mm | 6 | |
| 28 Sept. | Patchy rain possible | 29° /28° | 2.5 mm | 6 | |
| 29 Sept. | Patchy rain possible | 29° /28° | 0.8 mm | 6 | |
| 30 Sept. |  Thundery outbreaks possible | 29° /28° | 6.6 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Northern Mariana Islands in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Northern Mariana Islands forecast closer to your planned date for the most up-to-date weather information.
Change Month
Northern Mariana Islands in September - FAQ
What are the expected maximum and minimum temperatures in Northern Mariana Islands during September?
During September, expect a variety of temperatures with highs around 29° and lows near 28°, suitable for diverse activities and preferences.
How much rainfall should be expected in Northern Mariana Islands during September?
Significant rainfall exceeding 478.8 mm is expected in Northern Mariana Islands during September, occurring over more than 30 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Northern Mariana Islands during September?
The average wind speed in Northern Mariana Islands during September is 27 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Northern Mariana Islands
Explore the daily rainfall trends and prepare for Northern Mariana Islandss September weather 💧
UV exposure in Northern Mariana Islands during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Northern Mariana Islands?Get accurate weather forecasts for Northern Mariana Islands, located at latitude 15.212 and longitude 145.755. Stay updated with localized weather information tailored for Northern Mariana Islands.
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