Open Travel Guide
Weather in Shiga

Shiga Weather & Climate Guide 2026

Month-by-month weather, best times to visit, and what to pack for Shiga.

Weather through the year in Japan

6° JAN 6° FEB 10° MAR 14° APR 19° MAY 22° JUN 26° JUL 28° AUG 24° SEP 18° OCT 12° NOV 7° DEC

Best time Shoulder Worth avoiding

Average daytime temperature in °C. Figures are for Japan.

Shiga Prefecture surrounds Lake Biwa, Japan's largest freshwater lake, just a short train ride east of Kyoto. Landlocked and often overlooked by international visitors, it pairs the UNESCO-listed temple complex of Enryaku-ji on Mt. Hiei with the National Treasure castle at Hikone, Edo-era merchant towns, Shigaraki pottery villages, and some of Japan's finest wagyu in Omi beef.

Shiga Prefecture sits in a humid subtropical to humid continental transition zone (Köppen Cfa), centered on Lake Biwa, Japan's largest lake. Four distinct seasons are pronounced here: hot humid summers (June–August, including the tsuyu rainy season from mid-June to mid-July), cold winters with lake-effect snow especially on the north and west shores around Takashima and Nagahama, and mild, temperate spring and autumn. The lake moderates temperatures somewhat near its shores compared to inland areas, but also generates its own weather patterns, including winter snow squalls.

Best time to visit

Recommendation

Best: Year-round

Avoid: None

Month-by-month weather

Typical conditions throughout the year.

Items

The seasons

What to expect in each part of the year.

Season

Items

Crowds & peak times

When to expect tourists and when to avoid them.

Items
  • Period
    Golden Week (late April–early May)
    Crowd level
    Very high
    Notes
    Book accommodation and train tickets well in advance; Hikone Castle and lakeside parks are especially busy
  • Period
    Cherry blossom season (early April)
    Crowd level
    High
    Notes
    Hikone Castle and Kaizu-Osaki cherry tunnel are crowded on weekends; visit on weekday mornings for fewer crowds
  • Period
    Obon (mid-August)
    Crowd level
    High
    Notes
    Many Japanese domestic tourists visiting the lake; accommodation books up in Otsu and Hikone
  • Period
    Otsu Matsuri weekend (early October)
    Crowd level
    High
    Notes
    Central Otsu is extremely busy during the festival's main procession days
  • Period
    Autumn foliage peak (mid-November)
    Crowd level
    High
    Notes
    Mt. Hiei and Enryaku-ji see heavy weekend traffic; weekday visits recommended
  • Period
    December–February
    Crowd level
    Low
    Notes
    Best deals and quietest sightseeing; good for budget travellers, though north shore snow can disrupt travel

Major events & festivals

Time your visit around what matters.

April (mid-month)

One of Japan's most famous float festivals, featuring ornate hikiyama floats and child kabuki performances in Nagahama's historic streets

October (first weekend)

Otsu's signature festival with elaborate mechanical karakuri floats parading through the city centre; visitors welcome to view the procession

Year-round, with special events in spring and autumn

The castle's mascot character Hikonyan performs several times daily; special seasonal events tie in with cherry blossom and autumn foliage viewing

August

One of the region's largest fireworks displays over Lake Biwa, viewed from the Otsu waterfront and passenger boats

March (weekend nearest the 14th–15th)

Fire festival featuring elaborate straw effigies paraded and burned; a UNESCO-recognised Intangible Cultural Heritage tradition

November

Evening illumination of the autumn foliage at the UNESCO World Heritage temple complex atop Mt. Hiei