Isahaya Weather in January

January in Isahaya brings low temperatures, with daytime highs of 11°C (52°F) and nights around 6°C (43°F). Rainfall is at its lowest this month, making it one of the more reliable months to be outdoors.

Rainfall in Isahaya in January

This is the driest month of the year, though the temperatures are on the cooler side. Typically, about 20 days will experience rainfall, with an average of 80 mm (3.1 in) for the month. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.

Temperature in Isahaya in January

January in Isahaya sees highs of 11°C (52°F) and lows of 6°C (43°F) overnight. During January, you'll experience the winter season. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. With overnight lows of 6°C (43°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets. The temperatures in January are often the mildest compared to the rest of the year.

Sunshine in Isahaya in January

The city usually sees around 104 hours of sunlight, indicating a moderately sunny period.

Wind Speed in Isahaya in January

Wind speeds average 2 m/s (4 knots) during January. At this speed, expect light breezes that you can feel on your face and cause leaves to rustle gently. Since this is an average, some days are calmer with barely any wind while others have more noticeable gentle breezes.

Average water temperature in January

The water temperature is 16°C (61°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. October typically offers the best weather for Isahaya.

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Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Japan, check out our Isahaya's climate page.

Isahaya Temperature in January

Min Temperature 6°C (43°F)  

Max Temperature 11°C (52°F)  

Water Temperature 16°C (61°F) *  

Chance of Rain 67%  

Precipitation 80 mm (3.1 in)  

Rainy days 20 days  

Humidity 66% *  

Windspeed 2 m/s (4 knots) *  

Sunshine 104 hours *  

Percentage Sunshine 32% *  

* Data from: Nagasaki, Japan (23 KM, 14 Miles).

What to Wear in Isahaya in January

Pack for changing conditions in Isahaya in January. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Rain gear is recommended, you can expect wet weather on multiple days. With water temperatures around 16°C (61°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Isahaya in January

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

6/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Japan, check out our Isahaya's climate page.

More climate data for Isahaya

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Isahaya climate overview or explore weather in Japan.