Year-round weather and climate in Otaru, Japan
Average temperatures in Otaru run from an average low of -5°C23°F in January up to an average high of 27°C81°F in August. September is the driest month at 12 rainy days; January the wettest at 21 rainy days. Here is the annual climate data, so you know what you are packing for.
Good to know
- Population
- 115K
- Currency
- JPY
- Language
- Japanese
- Time zone
- Tokyo
Best time to visit
The most pleasant weather falls in July, August, and September, offering a perfect balance of comfortable temperatures and clear skies.
Rain character
Tropical Downpours: Expect intense bursts of rain during wetter months. Pack quick-drying footwear and a compact umbrella.
Day-to-night swing
Evening Chill: Temperatures drop by a noticeable <span class="val-c">8°C</span><span class="val-f">14°F</span> when the sun goes down. A light sweater or jacket is usually all you need for evening plans.
Seasonality Profile
True Four Seasons: Dramatic contrasts. Freezing winters, transitional shoulders, and blazing summers.
Evening vibe
Cozy Indoor Culture: Evenings are generally crisp, damp, or sweltering. Nightlife centers around indoor venues.
Sightseeing stamina
All-Day Strolling: Weather is generally forgiving for long walking days. Comfortable sneakers are your most important packing item.
Average temperatures, sunshine, and rainfall
Average monthly weather in Otaru, based on recent historical data. Essential insights on temperature swings, expected rainfall, and daily sunshine.
Bars span the average daily low to high. Sep is typically driest at 12 rainy days (139mm); Jan the wettest at 21 rainy days (146mm).
| Month | Average high | Average low | Daily sunshine | Rainy days | Total rainfall |
|---|---|---|---|---|---|
| Jan | 0°C / 31°F | -5°C / 23°F | 5h | 21 | 146mm |
| Feb | 0°C / 32°F | -5°C / 24°F | 6h | 20 | 137mm |
| Mar | 4°C / 40°F | -2°C / 29°F | 8h | 16 | 86mm |
| Apr | 12°C / 53°F | 4°C / 40°F | 8h | 14 | 105mm |
| May | 17°C / 62°F | 9°C / 49°F | 10h | 13 | 80mm |
| Jun | 22°C / 71°F | 15°C / 58°F | 11h | 13 | 98mm |
| Jul | 26°C / 80°F | 20°C / 68°F | 10h | 13 | 109mm |
| Aug | 27°C / 81°F | 21°C / 70°F | 9h | 21 | 162mm |
| Sep | 23°C / 74°F | 17°C / 62°F | 9h | 12 | 139mm |
| Oct | 16°C / 61°F | 9°C / 49°F | 8h | 14 | 144mm |
| Nov | 9°C / 48°F | 3°C / 37°F | 6h | 18 | 146mm |
| Dec | 1°C / 34°F | -4°C / 25°F | 5h | 18 | 102mm |
Weather data by Open-Meteo.com (opens in a new tab)
Frequently Asked Questions
When is the sunniest time of year to visit Otaru?
June is the sunniest month in Otaru, averaging 11 hours of sunshine a day. Pack a pair of sunglasses for clear days.
What clothes should I pack for Otaru?
Your packing list depends entirely on when you travel. Temperatures in Otaru swing from an average low of -5°C23°F in January up to 27°C81°F in August. The Packola app builds a tailored packing list for you based on the live weather forecast for your exact travel dates.
Do I need to pack an umbrella for Otaru?
Otaru gets rain on about 193 days a year, with January being the wettest. If you're traveling then, pack an umbrella and a light rain jacket.
Pack smarter.
Averages get you close, but the week you travel is what matters. Get the live forecast, a smart packing list, and discover the best local spots and activities in Otaru with Packola.
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