Tokyo will have clear skies to start the week, with cool temperatures around 2°C to 13°C (36°F to 55°F). Midweek turns partly cloudy, with highs near 10°C to 12°C (50°F to 54°F) and lows gradually warming to around 3°C to 4°C (37°F to 39°F).

The weekend brings more clouds, but temperatures will stay steady, with highs around 11°C to 13°C (52°F to 55°F) and lows near 3°C to 4°C (37°F to 39°F).

Pack warm layers and a comfortable jacket for chilly mornings and evenings, along with a scarf or gloves for extra warmth.

From December 18 to 19, Japan will experience a winter weather pattern with cold air and brisk conditions. On December 20, high pressure will move over Honshu, bringing calmer weather. By December 21, a low-pressure system will move east across the Sea of Japan, followed by another system passing along Japan’s southern coast.

On December 22, as the low-pressure system intensifies, wintry conditions will strengthen, especially in northern and coastal areas.

No typhoon warnings have been issued for the Tokyo area this week.

Japan's typhoon season runs from May through October, with most activity from July to September. During a typhoon, transit delays and cancelations can be expected. Be sure to stay updated on the latest weather and flight information. For real-time updates on railways and airports, visit LIVE JAPAN's transport information page.

Sapporo will experience a cold and snowy week, with frequent flurries on Monday and Tuesday and temperatures ranging from -6°C to -1°C (21°F to 30°F). Midweek brings occasional flurries, with highs staying near 0°C to 1°C (32°F to 34°F) and lows dropping to around -8°C to -4°C (18°F to 25°F).

Expect cloudy skies and light snow to continue through the weekend, with temperatures remaining chilly.

To stay warm and comfortable in cold and snowy conditions, pack a heavy winter coat, gloves, a hat, and sturdy, waterproof boots.

Sendai will have a mostly cloudy start to the week, with cool temperatures around 1°C to 7°C (34°F to 45°F). Midweek brings partly cloudy skies and steady highs of 6°C to 8°C (43°F to 46°F), with lows near 0°C (32°F).

By the weekend, expect more clouds and slightly warmer temperatures, with highs reaching around 9°C to 10°C (48°F to 50°F) and lows remaining at 0°C (32°F).

Pack warm layers, a cozy jacket, and gloves to stay comfortable in the chilly conditions, especially in the mornings and evenings.

Osaka will see partly cloudy skies for most of the week, with cool temperatures ranging from lows around 4°C to 5°C (39°F to 41°F) and highs near 10°C to 13°C (50°F to 55°F). The end of the week turns cloudier, with occasional showers expected on Saturday and highs remaining steady around 11°C to 12°C (52°F to 54°F).

Pack warm layers for the cool mornings and evenings, along with a jacket and an umbrella for the chance of rain over the weekend.

Fukuoka will have a cloudy week with cool temperatures ranging from lows around 5°C to 8°C (41°F to 46°F) and highs between 9°C and 12°C (48°F to 54°F). Occasional scattered showers are expected on Thursday and Saturday, while the rest of the week remains mostly dry but overcast.

Naha will have a mix of cloudy and partly cloudy skies throughout the week, with mild temperatures ranging from lows around 15°C to 17°C (59°F to 63°F) and highs between 18°C and 21°C (64°F to 70°F). Scattered showers are possible on Saturday, while the rest of the week remains mostly dry but overcast.

Forecast text was AI-generated, then human-edited. Source for forecast and images: Japan Meteorological Agency website, www.jma.go.jp

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