Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
Weather Guide
Northern Mariana Islands Average Monthly Weather
Weather score65Good annual avg
Best months: March, April, February
Across the year, average daytime temperatures are around 30°C, sunshine averages 2.9h per day, and rainfall totals about 1579mm. Sea temperatures average 29°C across the year.
Annual weather
Annual averages
Temp
30°C
Rain
1579mm
Annual total
Sun
2.9h
Sea
29°C
Weather score
65
Good avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 279mm, so showers are a real planning factor.
Limited sun
Sunshine averages 2.6h per day, so this is not one of the brighter months.
Warm sea
Sea temperatures average 30°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Northern Mariana Islands with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August31°C average high
August is one of Northern Mariana Islands' warmest months, with daytime heat above the yearly average.
Warmest monthsApril to December
This stretch sets the upper range for average daytime heat.
Rain
August279mm average rain
August is one of Northern Mariana Islands' wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to June and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August2.6 hours average sun
August is below Northern Mariana Islands' yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsFebruary to July
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August30°C average sea
August is one of Northern Mariana Islands' warmest sea months, when swimming comfort is usually strongest.
Warmest seaMay to November
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
Weather score
August50 weather score
August is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJanuary to June
These months have the strongest weather score in the monthly averages.