Okinawa Prefecture Free Weather Report 2025

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🇯🇵 Okinawa Prefecture Weather Report – Month-by-Month Overview

🌴 January
Mild and breezy. Naha averages 13 to 19°C. Rainfall is light, and skies are partly cloudy. Ocean winds keep the air fresh. Popular for winter beach walks and subtropical sightseeing.

🌴 February
Still mild. Highs reach 18–20°C, with lows around 14°C. Occasional rain and overcast days. Cherry blossoms bloom early, especially in northern Okinawa. Humidity remains low.

🌧️ March
Spring begins. Temperatures rise to 19–23°C. Rainfall increases slightly. Skies alternate between sun and clouds. Ideal for exploring coastal areas and island hopping.

🌸 April
Warm and blooming. Highs reach 22–26°C. Rain showers are brief. Hibiscus and bougainvillea flourish. Beaches begin to fill with early-season swimmers and snorkelers.

🌼 May
Hot and humid. Temperatures climb to 25–29°C. Rainfall increases as the rainy season approaches. Skies are often cloudy, and humidity rises. Typhoon monitoring begins.

🌦️ June
Rainy season peaks. Highs range from 27–31°C. Heavy showers and thunderstorms are frequent. Humidity is high. Rivers swell, and lush greenery covers the islands.

🌧️ July
Hot and stormy. Temperatures reach 29–33°C. Typhoon season intensifies. Rainfall is heavy but intermittent. Sunshine returns between storms. Festivals begin, and beaches stay busy.

☀️ August
Still hot. Highs remain between 30–34°C. Rain is sporadic. Sunshine dominates most days. Typhoon threats persist. Coral reefs attract divers, and summer events fill the calendar.

🌧️ September
Transition to autumn. Temperatures ease to 28–32°C. Rain returns due to lingering typhoons. Nights grow cooler. Early signs of seasonal change appear in vegetation.

🍂 October
Warm and calmer. Highs drop to 25–29°C. Rainfall decreases. Typhoon season ends. Clear skies and lower humidity make it ideal for travel and outdoor activities.

🌫️ November
Mild and dry. Highs hover around 22–26°C, with lows near 18°C. Rain is infrequent. Winds pick up slightly. Popular for off-season beach visits and cultural festivals.

🌴 December
Cool and breezy. Temperatures range from 17 to 22°C. Rainfall is light. Coastal towns see more clouds than sun. Illuminations and holiday events brighten city streets.

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Okinawa, Japan: Monthly Weather ReportOkinawa, a Japanese prefecture comprising over 150 islands in the East China Sea, is renowned for its subtropical climate, characterized by warm, humid summers and mild winters. Situated at a latitude similar to Hawaii, Okinawa enjoys relatively stable temperatures year-round, with significant rainfall and occasional typhoons. This report provides a detailed month-by-month analysis of Okinawa’s weather, focusing on the capital city, Naha, based on data from 1991–2020, supplemented by recent insights. The climate is classified as Cfa (humid subtropical, no dry season) under the Köppen-Geiger system, with an annual average temperature of 22.9°C (73.2°F) and approximately 2,000 mm (79 inches) of rainfall.JanuaryJanuary is Okinawa’s coldest month, though still mild compared to mainland Japan. Average temperatures hover around 17.4°C (63°F), with highs of 20.7°C (69.3°F) and lows of 15.3°C (59.5°F). Precipitation is relatively low at 99 mm (3.9 inches) over 12 days, making it one of the driest months. The sea temperature averages 22.2°C (72°F), too cool for prolonged swimming without a wetsuit. Sunshine hours are limited to about 3 hours daily (28% of daylight), with cloudy skies and occasional windy conditions. January is ideal for outdoor activities like hiking or whale watching, as well as cherry blossom viewing, which begins earlier than in mainland Japan, particularly at events like the Nago Cherry Blossom Festival. Light jackets and long-sleeve clothing are recommended, with summer gear for sunnier days.

FebruaryFebruary remains mild, with average temperatures of 17.7°C (64°F), highs of 22.7°C (72.9°F), and lows of 17.8°C (64°F). Rainfall slightly increases to 114 mm (4.5 inches) over 11 days, maintaining a relatively dry profile. Sea temperatures drop to their annual low of 21.5°C (70.7°F), unsuitable for casual swimming. Sunshine hours average 3.5 daily (29% of daylight), with humidity at 69%. The weather supports outdoor exploration, such as visiting the Yaese Cherry Blossom Festival, where 500 cherry trees are illuminated. Northerly winds may necessitate light jackets, especially in the evenings, but short-sleeve clothing is often sufficient during the day.

MarchMarch marks the transition to spring, with average temperatures rising to 19.4°C (67°F), highs of 22.3°C (72.1°F), and lows of 17.2°C (63°F). Rainfall increases significantly to 145 mm (5.7 inches) over 13 days, reflecting unpredictable squalls. The sea warms slightly to 21.5°C (70.7°F), and some beaches, like Chura Sun Beach, open for swimming, though wetsuits are advisable. Sunshine hours remain at 3.5 daily (31% of daylight), with humidity at 71%. March is perfect for beach activities, snorkeling, and events like the Higashi Village Azalea Festival. Visitors should pack versatile clothing, including T-shirts, shorts, and rainwear, to accommodate fluctuating conditions.

AprilApril feels like early summer, with average temperatures of 21.4°C (71°F), highs of 26.8°C (80.2°F), and lows of 21.8°C (71.2°F). Rainfall spikes to 160 mm (6.3 inches) over 12 days, but sunny days are common. The sea temperature reaches 22.4°C (72.3°F), suitable for short swims. Sunshine hours increase to 4 daily (31% of daylight), with humidity at 75%. Most beaches are fully open, and events like the Ryukyu Kaiensai Fireworks Festival draw crowds. Late April sees increased tourism due to Japan’s Golden Week. Light, breathable clothing is ideal, with raincoats for sudden showers and long-sleeve tops for cooler mornings.

MayMay brings warmer, muggy conditions, with average temperatures of 24.2°C (76°F), highs of 27.4°C (81.3°F), and lows of 22.6°C (72.7°F). The rainy season (Baiu) typically begins mid-month, with 244 mm (9.6 inches) of rain over 13 days. Sea temperatures rise to 24.3°C (75.7°F), comfortable for swimming. Sunshine hours average 4.5 daily (33% of daylight), but humidity climbs to 78%. The Naha Haarii dragon boat races highlight the month. Rainfall varies year-to-year (e.g., 600 mm in some years, 33 mm in 2018), so flexible itineraries are key. Pack summer clothing, raincoats, and layers for air-conditioned spaces.

JuneJune is the peak of the rainy season, with average temperatures of 26.7°C (82°F), highs of 29.5°C (85.1°F), and lows of 24.9°C (76.8°F). Rainfall is heaviest at 285 mm (11.2 inches) over 12 days, with high humidity (83%) and 5.5 sunshine hours daily (38% of daylight). Sea temperatures reach 26.5°C (79.7°F), ideal for snorkeling and kayaking. The month sees occasional sunny breaks, but typhoon season begins, potentially disrupting plans. Eisa Night performances in Okinawa City offer cultural highlights. Lightweight, breathable clothing, hats, and sunglasses are essential, with rain gear for frequent showers.

JulyJuly is Okinawa’s hottest month, with average temperatures of 29.4°C (85°F), highs of 33.9°C (93°F), and lows of 28.2°C (82.8°F). Rainfall drops to 191 mm (7.5 inches) over 11 days, as the rainy season ends. Sea temperatures peak at 28.5°C (83.3°F), perfect for beach activities. Sunshine hours are highest at 7.5 daily (54% of daylight), though typhoons remain a risk. July is busy with summer festivals and fireworks, but early-month visits avoid peak crowds. Light, airy clothing is a must, with sunscreen and hats for sun protection.

AugustAugust maintains intense heat, with average temperatures of 29.1°C (85°F), highs of 32.8°C (91°F), and lows of 28.2°C (82.8°F). Rainfall is 239 mm (9.4 inches) over 14 days, with humidity at 82%. Sea temperatures hit their annual high of 28.9°C (84°F). Sunshine hours average 6.5 daily (47% of daylight). Typhoons are common, and the Obon holiday increases crowds. Events like the Okinawa Zento Eisa Matsuri showcase traditional dance. Summer clothing and typhoon preparedness (e.g., indoor activity plans) are crucial.

SeptemberSeptember remains summery, with average temperatures of 28.1°C (83°F), highs of 31.7°C (89.1°F), and lows of 26.5°C (79.7°F). Rainfall is high at 274 mm (10.8 inches) over 13 days, with typhoon risks persisting. Sea temperatures are 28.3°C (82.9°F), and sunshine hours drop to 6 daily (43% of daylight). Cultural events like Naha’s tug-of-war festival are highlights. Light clothing and rain gear are necessary, with close monitoring of weather forecasts for typhoon updates.

OctoberOctober offers pleasant weather, with average temperatures of 26.1°C (78°F), highs of 28°C (82.4°F), and lows of 25°C (77°F). Rainfall decreases to 180 mm (7.1 inches) over 11 days, and sea temperatures are 27°C (80.6°F). Sunshine hours are 5.5 daily (40% of daylight). The typhoon threat diminishes, making it ideal for hiking, kayaking, and cultural events like Okinawa’s karate festivals. Light summer clothing with occasional layers for cooler evenings works well.

NovemberNovember is comfortable, with average temperatures of 23.4°C (73°F), highs of 25°C (77°F), and lows of 22°C (71.6°F). Rainfall is 119 mm (4.7 inches) over 10 days, and sea temperatures are 25.3°C (77.5°F). Sunshine hours average 4 daily (37% of daylight). Activities like stargazing and maritime heritage tours thrive. Light clothing with a jacket for evenings is recommended.

DecemberDecember brings cooler, pleasant weather, with average temperatures of 19.7°C (67°F), highs of 22°C (71.6°F), and lows of 19°C (66.2°F). Rainfall is 109 mm (4.3 inches) over 11 days, and sea temperatures are 23.7°C (74.7°F). Sunshine hours are 3.5 daily (33% of daylight). Cherry blossom season preparations and holiday light displays are highlights. Long-sleeve shirts and light jackets are suitable.

Best Time to VisitThe best months to visit Okinawa are April, October, and November, offering warm temperatures (21–28°C), moderate rainfall, and fewer crowds outside Golden Week and summer holidays. July is ideal for beach holidays, despite typhoon risks, due to its heat and sunshine. Winter months (January–March) suit outdoor activities like whale watching, while May–June are wetter but less crowded. Always monitor typhoon forecasts from June to September.

Okinawa’s subtropical climate ensures year-round warmth, but its weather varies significantly by month, requiring tailored planning for an optimal visit.

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