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
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.
Is September a good time to visit Northern Mariana Islands? check out the best time to travel to Northern Mariana Islands page.
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Temperatures
Rain 🌧️
More
0
Dry days
30
Rainy days
0
Snow days
29°/28°
Temperatures
27 km/h
Avg max wind
78 %
Avg humidity
Northern Mariana Islands in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  29° | 2 29° | 3 29° | 4  29° | 5  29° | 6 29° | 7 29° |
| 8 29° | 9 29° | 10 29° | 11  29° | 12 29° | 13  28° | 14 29° |
| 15  28° | 16 29° | 17  29° | 18  29° | 19 29° | 20 29° | 21 29° |
| 22 29° | 23 29° | 24 29° | 25 29° | 26 29° | 27 29° | 28 29° |
| 29 29° | 30 29° |
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Temperatures trend during September in Northern Mariana Islands
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Moderate or heavy rain shower | 29° /27° | 33.7 mm | 6 | |
| 2 Sept. | Moderate or heavy rain shower | 29° /28° | 17.2 mm | 6 | |
| 3 Sept. | Moderate or heavy rain shower | 29° /27° | 11.8 mm | 6 | |
| 4 Sept. | Patchy rain possible | 29° /28° | 3.1 mm | 6 | |
| 5 Sept. | Patchy light rain with thunder | 29° /27° | 11.9 mm | 6 | |
| 6 Sept. | Patchy light rain with thunder | 29° /28° | 17.6 mm | 6 | |
| 7 Sept. | Patchy rain possible | 29° /28° | 4.2 mm | 6 | |
| 8 Sept. | Light rain shower | 29° /28° | 7.6 mm | 6 | |
| 9 Sept. | Light rain shower | 29° /28° | 13.8 mm | 6 | |
| 10 Sept. | Moderate or heavy rain shower | 29° /26° | 25.8 mm | 6 | |
| 11 Sept. | Torrential rain shower | 29° /26° | 64.8 mm | 6 | |
| 12 Sept. | Moderate or heavy rain shower | 29° /27° | 71 mm | 6 | |
| 13 Sept. | Cloudy | 28° /26° | 26.9 mm | 6 | |
| 14 Sept. | Cloudy | 29° /27° | 14.3 mm | 6 | |
| 15 Sept. | Partly cloudy | 28° /27° | 16.1 mm | 7 | |
| 16 Sept. | Patchy rain possible | 29° /27° | 40.6 mm | 6 | |
| 17 Sept. | Thundery outbreaks possible | 29° /27° | 18 mm | 6 | |
| 18 Sept. | Patchy light rain | 29° /28° | 9.3 mm | 6 | |
| 19 Sept. | Light rain shower | 29° /28° | 2.4 mm | 6 | |
| 20 Sept. | Light rain shower | 29° /28° | 3.9 mm | 6 | |
| 21 Sept. | Patchy rain possible | 29° /28° | 3.5 mm | 6 | |
| 22 Sept. | Patchy light drizzle | 29° /28° | 5 mm | 6 | |
| 23 Sept. | Patchy rain possible | 29° /28° | 3.3 mm | 6 | |
| 24 Sept. | Patchy light rain with thunder | 29° /28° | 4.9 mm | 6 | |
| 25 Sept. | Patchy light rain with thunder | 29° /28° | 3 mm | 6 | |
| 26 Sept. | Light rain shower | 29° /28° | 5.4 mm | 6 | |
| 27 Sept. | Light rain shower | 29° /27° | 12.2 mm | 6 | |
| 28 Sept. | Moderate or heavy rain shower | 29° /27° | 12.4 mm | 6 | |
| 29 Sept. | Light rain shower | 29° /27° | 8.6 mm | 6 | |
| 30 Sept. | Thundery outbreaks possible | 29° /28° | 6.6 mm | 6 | |
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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.
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.
What to pack to Northern Mariana Islands in September?
As you prepare for your trip to Northern Mariana Islands in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Northern Mariana Islands, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Sandals/Flip-flops: Comfortable for warm climates
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
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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