Iwaki, Japan in January

January7°C average high

January has some of the coolest average daytime highs of the year, so pack for fresher conditions.

Warmest monthsJuly to September

This stretch sets the upper range for average daytime heat.

January40mm average rain

January is one of Iwaki's driest months, making outdoor days easier to plan than in wetter parts of the year.

Driest monthsJanuary to February and November to December

This is the drier part of the year, when outdoor plans usually need less weather flexibility.

January5.6 hours average sun

January is brighter than Iwaki's yearly average, though the strongest sunshine usually sits closer to the peak months.

Brightest monthsJanuary to May and August

This stretch has the strongest sunshine in the monthly averages.

January14°C average sea

January is below Iwaki's yearly sea-temperature average, so swimming can feel fresher.

Warmest seaJuly to September

Sea temperatures are usually near 21°C in this stretch, so swimming comfort is at its strongest.

January28 weather score

January scores below Iwaki's yearly average, so the weather trade-offs are more noticeable.

Best weather monthsJuly to August

These months have the strongest weather score in the monthly averages.