Do you need to know, when is the best time to go to Okinawa? Then you should take a look here, what weather you can expect there during the year.
Okinawa is part of Japan. The climate of Japan is very varied. The weather is tropical in south, but it is cool temperate in north. Most parts of Japan belong to the temperate zone, the climate here is humid subtropical with four distinct seasons. You can expect cool humid weather in the north, but warm tropical rainforest climate in the south.
When speaking about the usual weather in this area, the information is relevant for example for these popular places: Akajima, Daito Islands, Hateruma, Iriomote, Ishigaki, Itoman, Kerama Islands, Kitadaito, Kohama, Kumejima, Kuro, Minamidaito, Miyako, Miyako Islands, Nago, Naha, Okinawa City, Okinawa Island, Taketomi, Tarama, Tokashiki, Yaeyama Islands, Yonaguni, Zamami.
Let's look now what weather you can expect in the area around Nago and in many other cities. The warmest month here is August, the average maximum temperature is 32.2 ℃ (89.96 ℉). The average minimum temperature in this month is 25.3 ℃ (77.54 ℉). The coldest month here is January, the average maximum temperature is 19.3 ℃ (66.74 ℉). The average minimum temperature in this month is 11.9 ℃ (53.42 ℉). 
When travelling around Okinawa, always consider the altitude of the the place as well. We should remind you, that the highest point in Japan is Mount Fuji (3776 m) and the lowest point is Hachiro-gata (-4 m). So there are huge differences in altitudes in this country and the weather is very different in them therefore. Keep in mind, that the temperature usually decreases by 1.2 - 1.9 ℃ (2.2 - 3.5 ℉) per 200 m (656 ft), depending on the other conditions. (And we should add, that in the very special condition named thermal inversion even the temperature may be higher in higher altitudes.)
Typical (usual) weather in Okinawa in January is this: The average highest temperature in Okinawa in January is 19.3 ℃ (66.74 ℉). The average lowest temperature is 11.9 ℃ (53.42 ℉). At the beginning of January you can expect higher temperatures, the average highest temperature is around 20 ℃ (68 ℉). At the end of January you can expect higher temperatures, the average highest temperature is around 19.45 ℃ (67.01 ℉). The average rainfall is 122.1 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 10:29 (hours and minutes), in the middle of the month 10:39 and at the end of the month 10:54.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Okinawa in February is this: The average highest temperature in Okinawa in February is 19.6 ℃ (67.28 ℉). The average lowest temperature is 12.6 ℃ (54.68 ℉). At the beginning of February you can expect lower temperatures, the average highest temperature is around 19.45 ℃ (67.01 ℉). At the end of February you can expect higher temperatures, the average highest temperature is around 20.3 ℃ (68.54 ℉). The average rainfall is 138.8 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 10:54 (hours and minutes), in the middle of the month 11:14 and at the end of the month 11:37.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Okinawa in March is this: The average highest temperature in Okinawa in March is 21 ℃ (69.8 ℉). The average lowest temperature is 13.9 ℃ (57.02 ℉). At the beginning of March you can expect lower temperatures, the average highest temperature is around 20.3 ℃ (68.54 ℉). At the end of March you can expect higher temperatures, the average highest temperature is around 22.6 ℃ (72.68 ℉). The average rainfall is 159.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:37 (hours and minutes), in the middle of the month 12:00 and at the end of the month 12:24.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in Okinawa in April is this: The average highest temperature in Okinawa in April is 24.2 ℃ (75.56 ℉). The average lowest temperature is 17.3 ℃ (63.14 ℉). At the beginning of April you can expect lower temperatures, the average highest temperature is around 22.6 ℃ (72.68 ℉). At the end of April you can expect higher temperatures, the average highest temperature is around 26 ℃ (78.8 ℉). The average rainfall is 170.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:24 (hours and minutes), in the middle of the month 12:47 and at the end of the month 13:08.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Okinawa in May is this: The average highest temperature in Okinawa in May is 27.8 ℃ (82.04 ℉). The average lowest temperature is 20 ℃ (68 ℉). At the beginning of May you can expect lower temperatures, the average highest temperature is around 26 ℃ (78.8 ℉). At the end of May you can expect higher temperatures, the average highest temperature is around 28.85 ℃ (83.93 ℉). The average rainfall is 243 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 13:08 (hours and minutes), in the middle of the month 13:27 and at the end of the month 13:40.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in Okinawa in June is this: The average highest temperature in Okinawa in June is 29.9 ℃ (85.82 ℉). The average lowest temperature is 23.9 ℃ (75.02 ℉). At the beginning of June you can expect lower temperatures, the average highest temperature is around 28.85 ℃ (83.93 ℉). At the end of June you can expect higher temperatures, the average highest temperature is around 30.6 ℃ (87.08 ℉). The average rainfall is 295.9 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 13:40 (hours and minutes), in the middle of the month 13:47 and at the end of the month 13:47.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Okinawa in July is this: The average highest temperature in Okinawa in July is 31.3 ℃ (88.34 ℉). The average lowest temperature is 26.2 ℃ (79.16 ℉). At the beginning of July you can expect lower temperatures, the average highest temperature is around 30.6 ℃ (87.08 ℉). At the end of July you can expect higher temperatures, the average highest temperature is around 31.75 ℃ (89.15 ℉). The average rainfall is 205.3 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 13:47 (hours and minutes), in the middle of the month 13:39 and at the end of the month 13:26.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Okinawa in August is this: The average highest temperature in Okinawa in August is 32.2 ℃ (89.96 ℉). The average lowest temperature is 25.3 ℃ (77.54 ℉). At the beginning of August you can expect lower temperatures, the average highest temperature is around 31.75 ℃ (89.15 ℉). At the end of August you can expect lower temperatures, the average highest temperature is around 31.35 ℃ (88.43 ℉). The average rainfall is 312 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 13:26 (hours and minutes), in the middle of the month 13:07 and at the end of the month 12:46.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Okinawa in September is this: The average highest temperature in Okinawa in September is 30.5 ℃ (86.9 ℉). The average lowest temperature is 23.3 ℃ (73.94 ℉). At the beginning of September you can expect higher temperatures, the average highest temperature is around 31.35 ℃ (88.43 ℉). At the end of September you can expect lower temperatures, the average highest temperature is around 29.05 ℃ (84.29 ℉). The average rainfall is 180.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:46 (hours and minutes), in the middle of the month 12:24 and at the end of the month 12:00.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Okinawa in October is this: The average highest temperature in Okinawa in October is 27.6 ℃ (81.68 ℉). The average lowest temperature is 20.5 ℃ (68.9 ℉). At the beginning of October you can expect higher temperatures, the average highest temperature is around 29.05 ℃ (84.29 ℉). At the end of October you can expect lower temperatures, the average highest temperature is around 25.9 ℃ (78.62 ℉). The average rainfall is 192.5 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:00 (hours and minutes), in the middle of the month 11:37 and at the end of the month 11:15.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Okinawa in November is this: The average highest temperature in Okinawa in November is 24.2 ℃ (75.56 ℉). The average lowest temperature is 17.6 ℃ (63.68 ℉). At the beginning of November you can expect higher temperatures, the average highest temperature is around 25.9 ℃ (78.62 ℉). At the end of November you can expect lower temperatures, the average highest temperature is around 22.45 ℃ (72.41 ℉). The average rainfall is 137.9 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:15 (hours and minutes), in the middle of the month 10:55 and at the end of the month 10:39.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Okinawa in December is this: The average highest temperature in Okinawa in December is 20.7 ℃ (69.26 ℉). The average lowest temperature is 13.9 ℃ (57.02 ℉). At the beginning of December you can expect higher temperatures, the average highest temperature is around 22.45 ℃ (72.41 ℉). At the end of December you can expect lower temperatures, the average highest temperature is around 20 ℃ (68 ℉). The average rainfall is 115.1 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 10:39 (hours and minutes), in the middle of the month 10:30 and at the end of the month 10:28.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.| Kumejima | temperature: 18.9 ℃ (66.02 ℉) | highest temperature: 21.5 ℃ (70.7 ℉) | lowest temperature: 15.9 ℃ (60.62 ℉) | rainfall: 126.9mm | rainy days: - |
| Nago | temperature: 17.4 ℃ (63.32 ℉) | highest temperature: 20.7 ℃ (69.26 ℉) | lowest temperature: 13.9 ℃ (57.02 ℉) | rainfall: 115.1mm | rainy days: - |
| Naha | temperature: - | highest temperature: 21.3 ℃ (70.34 ℉) | lowest temperature: 16.2 ℃ (61.16 ℉) | rainfall: 100.6mm | rainy days: 8.1 |