Weather in September
in the Northern Mariana Islands
continues to be dominated by the wet season, exhibiting weather patterns consistent with the preceding months of heavy rainfall. There are no notable variations in climate among the different locations within the islands.
Temperatures in September range from 83°F to 85°F, remaining consistent with the temperatures in August
. The rainfall, although still significant, may show slight signs of abating as the islands progress towards the latter part of the wet season. Hurricanes and tropical storms remain a possibility, though their frequency may begin to decrease slightly.
Comparing September to August, the weather conditions remain largely similar, with minor reductions in rainfall and storm activity. As the islands move into October
, the continuation of the wet season ensures that weather patterns remain largely consistent, but with gradual shifts towards the season's end. September's weather, while still characterized by the wet season's intensity, marks a subtle transition towards the eventual easing of weather conditions in the Northern Mariana Islands.
- Saipan - September »
The months with the highest UV index in Saipan are February through September, with an average maximum UV index of 12. In Saipan, the nighttime temperature shows a slight difference from the daytime high, averaging to a still warm 75°F during September.
- Rota - September »
On the first day of September in Rota sunrise is at 6:07 am and sunset at 6:31 pm. The months with the highest UV index in Rota are February through September, with an average maximum UV index of 12.
- Tinian International Airport - September »
The month with the most rainfall in Tinian International Airport is September, when the rain falls for 20 days and typically aggregates up to 12.8" of precipitation. In Tinian International Airport, Northern Mariana Islands, in September, the average water temperature is 84.7°F.