Question 1

What is the weather like in Osaka during autumn 2024?

Accepted Answer

Osaka experienced mild to warm autumn weather in 2024 (September through November), with average temperatures of 20.4°C (68.7°F) across the season.

September remained quite warm in Osaka, with an average temperature of 27.3°C (81.1°F) and highs reaching up to 35.7°C (96.3°F). October brought more comfortable conditions at 20.6°C (69.1°F), while November cooled significantly to an average of 13.3°C (55.9°F) with lows dropping to 4.2°C (39.6°F).

Autumn 2024 in Osaka received a total of 401.4mm (15.8 inches) of precipitation. October was the wettest month with 186.8mm (7.4 inches), followed by November at 146.8mm (5.8 inches), while September was relatively dry with only 67.8mm (2.7 inches). Average humidity throughout the season was 76.3%.

Despite the rainfall, Osaka enjoyed generous sunshine during autumn 2024, totaling 713.9 hours across the three months. September was the sunniest with 276.9 hours, making early autumn ideal for outdoor sightseeing. The pleasant October temperatures coincided with the start of autumn foliage season, though visitors should prepare for occasional rainy periods.

For those planning to visit Osaka in autumn, layered clothing is recommended to accommodate the significant temperature drop from September's summer-like warmth to November's cooler conditions.

Question 2

How hot does Osaka get in summer?

Accepted Answer

Osaka experiences intense summer heat, with temperatures regularly exceeding 35°C (95°F) during the hottest months. In summer 2024 (June to August), the city recorded 20 days above 35°C and an impressive 55 days above 30°C (86°F).

The hottest day in Osaka during summer 2024 occurred on August 14, when the temperature peaked at 39.1°C (102.4°F). August was the warmest month overall, with average daily highs reaching 35.1°C (95.2°F) and nighttime lows staying around 25.6°C (78.1°F), offering little relief from the heat.

Monthly patterns show a clear progression: June averaged 22.4°C (72.4°F) with moderate highs of 27.2°C (81.0°F), while July saw temperatures climb to an average of 28.0°C (82.5°F) with daily highs of 32.2°C (90.0°F). The summer average temperature in Osaka was 26.8°C (80.2°F), with average daily highs of 31.6°C (88.8°F).

Humidity adds to the discomfort, averaging 75.9% across the summer months. Visitors to Osaka during this period should prepare for oppressive heat, especially in late July and August. Lightweight, breathable clothing, sun protection, and frequent hydration breaks are essential for exploring the city during these months.

Question 3

When does spring really start in Osaka?

Accepted Answer

Spring in Osaka typically begins in late March, with true spring-like weather arriving around March 26-29 based on 2024 data.

While meteorological spring starts on March 1, Osaka's weather tells a different story. In 2024, March still experienced winter-like conditions with an average temperature of just 7.9°C (46.2°F) and 15 frost days recorded through late March. The last frost occurred on March 22, 2024, marking the end of cold mornings in the city.

The transition to genuine spring weather happened rapidly in late March. Around March 26, Osaka's 7-day rolling average temperature first exceeded 10°C (50°F), and by March 29, daily mean temperatures reached 15°C (59°F). This dramatic warming signals the true start of spring in Osaka.

April brings a significant temperature leap, with the monthly average jumping to 16.0°C (60.8°F) and daily highs averaging 21.5°C (70.7°F). During April 2024, Osaka enjoyed 20 days with average temperatures at or above 15°C, making it the first reliably warm month of the year.

For visitors planning to experience Osaka's spring, late March through April offers the best conditions. This period coincides with cherry blossom season and pleasant temperatures ideal for exploring the city's outdoor attractions. Expect occasional spring showers, as April 2024 recorded 138.8mm (5.5 inches) of precipitation, but also abundant sunshine with 229 hours recorded during the month.

Question 4

How much rainfall did Osaka receive in 2024?

Accepted Answer

Osaka received a total of 1,811.7mm (71.3 inches) of rainfall in 2024, making it a fairly wet year with precipitation spread unevenly across the seasons.

The wettest month in Osaka was June 2024, which saw 307.5mm (12.1 inches) of rain during the peak of the traditional tsuyu (rainy season). The June-July rainy season period alone contributed 511.1mm (20.1 inches), accounting for 28.2% of the year's total precipitation. Summer months from June through August delivered 707.1mm (27.8 inches), representing 39.0% of the annual rainfall.

In contrast, December 2024 was remarkably dry with only 6.8mm (0.3 inches) of precipitation. Nine months throughout 2024 recorded over 100mm of rainfall, with May (233.8mm), July (203.6mm), August (196.0mm), and October (186.8mm) all seeing substantial wet weather.

For visitors planning a trip to Osaka, the driest conditions occur in winter, while the rainy season from mid-June through mid-July requires an umbrella. October can also bring heavy rainfall due to typhoon activity, as the 186.8mm recorded in October 2024 demonstrates. The city's climate means being prepared for rain is advisable throughout much of the year.

Question 5

How cold did Osaka get in winter 2023/24?

Accepted Answer

Osaka experienced its coldest temperature of -4.6°C (23.7°F) during winter 2023/24 (December 2023 to February 2024), recorded on January 25, 2024.

Throughout the winter season, Osaka saw an average temperature of 6.3°C (43.3°F), with daily highs typically reaching 11.6°C (52.8°F) and overnight lows dropping to 1.4°C (34.6°F). The city recorded 35 frost days when temperatures fell below freezing, with January being the coldest month at an average of 5.0°C (41.0°F).

The five coldest nights in Osaka during winter 2023/24 all occurred between late December and late January, with temperatures plunging to -4.6°C on January 25, -4.1°C on January 17, and -3.0°C on December 23. February proved milder, with the lowest temperature reaching only -1.9°C (28.6°F) and just 7 frost days compared to January's 17.

For visitors planning winter travel to Osaka, layered clothing and a warm jacket are essential, especially for early morning or evening activities. While the city rarely sees extreme cold by global standards, the combination of humidity and sub-zero overnight temperatures can feel quite brisk. Indoor attractions like Osaka Castle Museum and Shinsaibashi shopping district offer comfortable alternatives on the coldest days.

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FAQ

What is the weather like in Osaka during autumn 2024?

How hot does Osaka get in summer?

When does spring really start in Osaka?

How much rainfall did Osaka receive in 2024?

How cold did Osaka get in winter 2023/24?