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Japan V London Weather
Tokyo Japan
Tokyo, JP
12:51 am,
Dec 6, 2025
6°C
clear sky
London Weather
London, GB
3:51 pm,
Dec 5, 2025
9°C
scattered clouds
Below is a detailed comparison of the weather in London, United Kingdom, and Tokyo, Japan, by month, focusing on average temperatures, precipitation, and general climate characteristics. The data is sourced from reliable climate information and presented in a concise, month-by-month format for clarity. Since Japan is a geographically diverse country, this comparison uses Tokyo as a representative city for Japan, as it is commonly referenced in weather comparisons.
January Weather
January
- London: Coldest month with average highs of 7.0°C and lows of 2.3°C. Rainfall averages 37mm over 15.7 rainy days, with occasional snow (2mm). Days are short, with about 8.5 hours of daylight.
- Tokyo: Also coldest month, with average highs of 8.0°C and lows of 0.7°C. Rainfall is lower at about 50mm over 5-6 days. Humidity is moderate (~50-60%). Tokyo is drier and slightly colder at night than London.
- Comparison: Both cities are cold, but Tokyo is drier with less frequent rain. London’s weather is more unpredictable, with wetter conditions and occasional snow.
February Weather
February
- London: Slightly warmer with highs of 7.8°C and lows of 2.2°C. Rainfall is around 24mm over 13-14 days, with possible snow (9mm). Daylight increases to ~10 hours.
- Tokyo: Highs of 9.0°C and lows of 1.5°C. Rainfall remains low at ~60mm over 6-7 days. Sunny and dry, with similar humidity to January.
- Comparison: Tokyo is marginally warmer and drier than London. London’s precipitation is more frequent, but both cities see crisp, winter conditions.
March Weather
March
- London: Spring begins with highs of 10.6°C and lows of 3.7°C. Rainfall averages 24mm over 12-13 days. Daylight extends to ~12 hours.
- Tokyo: Highs of 12.0°C and lows of 4.0°C. Rainfall increases to ~100mm over 9-10 days. Cherry blossoms may start in southern Japan.
- Comparison: Tokyo is warmer and wetter than London. London’s spring is cooler but more stable, with less rainfall.
April Weather
April
- London: Highs of 13.3°C and lows of 5.3°C. Rainfall is low at 22mm over 12 days. Daylight reaches ~14 hours, and flowers bloom.
- Tokyo: Highs of 17.0°C and lows of 9.0°C. Rainfall is ~130mm over 10-11 days. Cherry blossom season peaks in Tokyo.
- Comparison: Tokyo is significantly warmer and wetter. London’s weather is milder and better for outdoor activities with less rain.
May Weather
May
- London: Highs of 16.8°C and lows of 8.3°C. Rainfall is ~26mm over 11-12 days. Daylight increases to 15.6 hours, marking the start of pleasant weather.
- Tokyo: Highs of 22.0°C and lows of 14.0°C. Rainfall is ~140mm over 11 days. The rainy season (tsuyu) begins in southern Japan but not yet in Tokyo.
- Comparison: Tokyo is much warmer but wetter. London’s milder temperatures and lower rainfall make it more comfortable for outdoor exploration.
June Weather
June
- London: Summer begins with highs of 19.0°C and lows of 11.0°C. Rainfall peaks at 45mm over 16 days, the wettest month. Daylight is longest at 16.5 hours.
- Tokyo: Highs of 25.0°C and lows of 18.0°C. Rainfall is high at ~181mm over 12-13 days, as the rainy season starts in Tokyo.
- Comparison: Tokyo is hotter and much wetter due to the rainy season. London’s summer is milder but still rainy, with longer daylight hours.
July Weather
July
- London: Warmest month with highs of 22.3°C and lows of 12.0°C. Rainfall is ~30mm over 13 days. Humidity increases slightly.
- Tokyo: Highs of 29.0°C and lows of 22.0°C. Rainfall is ~150mm over 11-12 days. Hot and humid, with the rainy season ending mid-month.
- Comparison: Tokyo is significantly hotter and more humid, making it feel oppressive compared to London’s comfortable summer warmth.
August Weather
August
- London: Highs of 21.0°C and lows of 12.0°C. Rainfall is ~30mm over 13 days. Similar to July but slightly cooler.
- Tokyo: Hottest month with highs of 31.0°C and lows of 23.5°C. Rainfall is ~160mm over 10 days. Very humid, with peak typhoon season starting.
- Comparison: Tokyo’s heat and humidity are intense, often feeling like 35-40°C due to humidity. London remains mild and more comfortable.
September Weather
September
- London: Autumn begins with highs of 19.0°C and lows of 10.0°C. Rainfall is ~26mm over 12 days. Daylight decreases to ~12.5 hours.
- Tokyo: Highs of 27.0°C and lows of 20.0°C. Rainfall peaks at ~191mm over 12-13 days. Still hot and humid, with typhoon risks.
- Comparison: Tokyo remains much warmer and wetter. London’s cooler, drier weather is more pleasant for outdoor activities.
October Weather
October
- London: Highs of 14.3°C and lows of 8.0°C. Rainfall is ~30mm over 13 days. Autumn colors emerge, and days shorten to ~11 hours.
- Tokyo: Highs of 21.0°C and lows of 14.0°C. Rainfall is ~160mm over 11 days. Typhoon season continues but temperatures cool.
- Comparison: Tokyo is warmer and wetter, while London feels crisp and autumnal. London’s weather is more predictable.
November Weather
November
- London: Highs of 10.0°C and lows of 5.7°C. Rainfall increases to 34mm over 14 days. Winter approaches, with ~10.7 hours of daylight.
- Tokyo: Highs of 16.0°C and lows of 8.0°C. Rainfall is ~90mm over 8-9 days. Autumn foliage peaks in Tokyo.
- Comparison: Tokyo is warmer and drier. London’s weather is cooler and wetter, signaling the onset of winter.
December Weather
December
- London: Highs of 7.8°C and lows of 2.8°C. Rainfall is 37mm over 15.7 days, with occasional snow (2mm). Shortest days at ~7.5 hours.
- Tokyo: Highs of 11.0°C and lows of 3.0°C. Rainfall is ~50mm over 6-7 days. Dry and sunny, with cool nights.
- Comparison: Tokyo is warmer and much drier. London’s wetter, colder conditions make it feel more wintry.
Conclusion
Japan V London weather all year round
- Temperature: Tokyo is generally warmer than London year-round, with a mean annual temperature of 17.3°C compared to London’s 12.2°C (a 5.1°C difference). Tokyo’s summers are much hotter (up to 31.0°C vs. London’s 22.3°C), and winters are slightly milder at night.
- Precipitation: Tokyo has higher annual rainfall (~1,590mm vs. London’s ~594mm) and is wetter in summer (June-September) due to the rainy season and typhoons. London’s rainfall is more evenly distributed, with a peak in June.
- Humidity: Tokyo’s humidity is higher, especially in summer (70-80%), making it feel hotter. London’s humidity is moderate (50-60%), with less impact on perceived temperature.
- Daylight: London has more extreme daylight variations (7.5 hours in December to 16.5 hours in June) compared to Tokyo (9.9 hours in December to 14.5 hours in June).
- Seasonal Notes: London’s weather is famously unpredictable, with mild summers and wet winters. Tokyo has distinct seasons, with hot, humid summers, a rainy season (June-July), and potential typhoons (August-September). Spring and autumn are pleasant in both cities, but Tokyo’s cherry blossoms (March-April) and autumn foliage (November) are notable.
Notes
- London: Best visited in May or September for milder weather and fewer crowds. Winter (November-February) is cold and wet, less ideal for tourism.
- Tokyo: Spring (March-May) and autumn (October-November) are ideal due to mild temperatures and scenic beauty (cherry blossoms, autumn leaves). Summer is hot and humid, requiring precautions like hydration and sun protection.
- Travel Tips: In Tokyo, prepare for humidity and sudden rain in summer; carry umbrellas and light clothing. In London, expect frequent drizzle year-round and dress in layers for unpredictability.
This comparison highlights Tokyo’s warmer, wetter climate with more extreme summer conditions versus London’s milder, more consistent but often wetter weather. For specific activities or travel planning, consider these monthly differences to choose the best time to visit.
Paul (Poison Fish) Manjyu Woodman
