Booking through the platform saves some money, and you can get instant ticket confirmation and a QR code for entry immediately, which is quite convenient. The aquarium section has a rich variety of life, and you can see the shows quite closely, making it well worth a visit.
The day trip to Hitachi Seaside Park and the seafood market wasn't too rushed. We were especially lucky at the seafood market; we found a restaurant that was mostly frequented by locals – the prices were great value, and the food was fresh and delicious! 👍
Anonymous User
Friend
Oarai Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Oarai year round climate
Spring (March–May): 9.1–18.1°C on average, mild climate but with relatively high rainfall, especially in April and May. Common activities: seaside walks, flower viewing (depending on blooming conditions). Recommended clothing: light jacket, comfortable long pants or skirt.
Summer (June–August): 22.1–27.6°C on average, hot and humid, with rainfall concentrated in June. Common activities: swimming, surfing, seaside holidays. Recommended clothing: light and breathable clothing, sun hat, sunscreen.
Autumn (September–November): 12.4–24.8°C on average, comfortable and pleasant climate, but with relatively high rainfall in September. Common activities: outdoor walks, sightseeing. Recommended clothing: light jacket, long-sleeved shirt.
Winter (December–February): 3.9–6.0°C on average, cold and dry, with low rainfall. Common activities: onsen experience, indoor leisure activities. Recommended clothing: warm jacket, hat, scarf, gloves.
Oarai climatological average
Annual average temperature: approx. 15.7°C / Annual rainfall: approx. 1421 mm / Summer humidity: 70%–80% / Rainiest month: June
Oarai monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
3.9°C
32.3
February
5°C
53
March
9.1°C
109.3
April
14.7°C
105.7
May
18.1°C
160.3
June
22.1°C
225
July
26.9°C
130.7
August
27.6°C
155.7
September
24.8°C
209.7
October
17.5°C
128.7
November
12.4°C
88.3
December
6°C
22.8
Oarai weather for the next seven days
7/21
Tuesday
Sunny
35°C/25.6°C
7/22
Wednesday
Sunny
33.4°C/25°C
7/23
Thursday
Patchy rain nearby
30.5°C/24.2°C
7/24
Friday
Partly Cloudy
27.8°C/23.2°C
7/25
Saturday
Light rain shower
26.6°C/21.9°C
7/26
Sunday
Patchy rain nearby
23.6°C/21.5°C
7/27
Monday
Patchy rain nearby
24.6°C/21.2°C
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