Iwanuma weather
Best months for weather: May–Jun, Aug–Sep. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Iwanuma, Miyagi, Japan.
Best Time to Visit
Peak season May–Jun, Aug–SepOff season Dec–Mar
Iwanuma weather by month
When is the best time to visit Iwanuma?
Based on weather alone, the best time to visit Iwanuma is May–Jun, Aug–Sep, according to NASA's 2001–2025 climate averages. Dec–Mar tends to be the least pleasant. Average highs run from 1°C (34°F) in January to 28°C (82°F) in August.
What is the rainiest month in Iwanuma?
July is the wettest month, with about 202 mm (8.0 in) of rain on average. February is the driest, with about 62 mm (2.4 in).
What is the hottest month in Iwanuma?
August is the warmest, with average highs of 28°C (82°F) and lows of 19°C (67°F). January is the coolest, with highs of 1°C (34°F) and lows of -6°C (22°F).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), forecast and current conditions from Open-Meteo. Page updated . How we rate months