If you are going to travel anyway, you want it to be sunny! But it rains a lot in Okinawa Prefecture.
Due to its subtropical nature, Okinawa Prefecture is blessed with a mild climate throughout the year, and is popular worldwide as a tourist destination with beautiful beaches and blue seas. Although many days exceed 25°C, the temperature rarely rises above 35°C, and Okinawa is also called a summer resort in the summer months.
Table of Contents
- 1 Japan Meteorological Agency, "Weather Appearance Rates."
- 1.1 Weather determination conditions and priorities
- 1.2 Sunny rate from January to December (Okinawa main island)
- 1.3 Ranking in order of month with the highest clear rate
- 1.4 Okinawa Main Island (Naha) yearly chance of clear/cloudy/rain
- 1.5 Okinawa Main Island (Naha) Difference between 1st place and last place
- 1.6 Okinawa Main Island (Naha) By Bathing Season
- 1.7 summary
Ranking of Sunny Rate of Okinawa Main Island by Weather Appearance Rate
When planning a trip, it is most important to know which months are the sunniest and allow you to enjoy the beauty of the ocean to the fullest. In the past, when we asked our followers on Okibura's Instagram, "Why do you go to Okinawa? the answer was "To see the beautiful ocean.
To see the beautiful ocean, it must be sunny. If so, when is a clear day? This is important.
Japan Meteorological Agency, "Weather Appearance Rates."
What we always refer to here is the "weather occurrence rate" published by the Japan Meteorological Agency. In Okinawa Prefecture, data observed from 1991 to 2020 at four locations in Naha, Minamidaito Island, Miyako Island, and Ishigaki Island are disclosed. The data is categorized into rain, cloudy, and clear based on the weather conditions of the day, which are then quantified.
Weather determination conditions and priorities
| weather | Judgment conditions | priority |
| rain | When daily precipitation of 1.0 mm or more is observed | 1 |
| cloudiness | When daily precipitation is less than 1.0 mm and daily mean cloud cover is 8.5 or more | 2 |
| clear weather | When daily precipitation is less than 1.0 mm and daily average cloud cover is less than 8.5 | 3 |
Citation:Okinawa Meteorological Observatory, "Weather Appearance Rates (%) for Various Locations".
How much is more than 1.0 mm of precipitation per day?
It is like a sprinkling of rain. Even if you walk outside for a little while without an umbrella, you will only get a little wet. It does not continue to rain for a long time, but feels like a beginning rain or a temporary light rain. The ground is a little wet and water droplets can be seen on leaves and car hoods. In general, this is the level of rain that makes you think, "I might want to bring an umbrella.
How much is the average daily cloud cover over 8.5?
Looking up at the sky, almost the entire area is covered with clouds, with little blue sky in sight. It looks as if a light rain is about to fall at any moment. The sun is hidden and the day can be described as slightly dark and heavy.
In this section, we introduce the monthly clear weather rate for the main island of Okinawa from January to December in a ranking format based on the "weather occurrence rate at the Naha point". Please use it as a reference when planning your trip.
Sunny rate from January to December (Okinawa main island)
What? Not many sunny days! You think? This is how it is.
Ranking in order of month with the highest clear rate
Okinawa Main Island (Naha) yearly chance of clear/cloudy/rain
Calculating all the observation data (1991-2020) at the Naha site, the annual weather occurrence rate is 49.71 TP3T for sunny, 19.21 TP3T for cloudy, and 31.11 TP3T for rainy.
That is why I would like to travel to the main island of Okinawa between July and November, when the annual chance of clear skies exceeds 49.71 TP3T!
Okinawa Main Island (Naha) Difference between 1st place and last place
In Okinawa's main island (Naha point), the clearing rate for October is 60.71 TP3T, while that for June is 37.71 TP3T. The difference is about 1.6 times as large. The difference is about 1.6 times. Even if you are traveling to Okinawa, the possibility of encountering a sunny day changes just by being aware of the time of year. (June is the rainy season, so the chance of clear skies is also low.)
Okinawa Main Island (Naha) By Bathing Season
The swimming season in Okinawa is generally from April to October. (In some places, you can go swimming in March or November.)
You also want to swim in the ocean on sunny days! Then July through October, when sunny days are in the top 4 above 501 TP3T, would be a good choice!
summary
So, if you want a sunny day trip to the main island of Okinawa, the best chance is in October! If you can't pinpoint October, you can travel to the main island between July and December (the second half of the year), and you will have a better chance of getting a sunny day!
If only the weather would clear up, the sea would be blue, you would feel good, and you would be satisfied. Please try to plan your trip to Okinawa with these tips!
Contributor Profile
- Okinawa travel media "OKIBRA" has been happily operated since 2020 by Kazunari, a computer geek, and Son-chan, an anime & food lover! They love Okinawa so much that they have visited more than 50 hotels and 500 restaurants in the prefecture, and they share the charms of Okinawa on Instagram and on the web. We will bring you the charms of Okinawa that you can't find anywhere else, from the unique perspective of a husband and wife team!
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