Nagasaki weather in April
Averages for 1991–2020 at the JMA's Nagasaki station (27 m above sea level).
- High
- 19.9°C (68°F)
- Low
- 11.7°C (53°F)
- Precipitation
- 153.0 mm
- Wet days
- 9.2 days
- Sunshine
- 178 hours
- Highs rise 4.6°C from March and climb another 4.0°C into May.
- That is 1.3°C below Nagasaki's yearly average high of 21.2°C.
- Of our 34 places with temperature records, Nagasaki is the 11th warmest in April: level with Fukuoka and 0.1°C warmer than Hiroshima.
- April is Nagasaki's 6th wettest month (153.0 mm).
- Of our 35 places, Nagasaki has the 5th highest precipitation in April: 8.0 mm less than Naha and 1.4 mm more than Shirakawa-go.
- Rain of 1 mm or more falls on 9.2 days, and 10 mm or more on 4.9 days.
- Rain of 30 mm or more in one day falls on 1.7 days.
- The sun is out for 40% or more of the possible hours on 17.3 days, and 4.8 days have under 0.1 hours of sunshine.
- On 15 April 2027 the sun rises at 5:52 and sets at 18:50 in Nagasaki, giving 12 hours 58 minutes of daylight (NAOJ).
- Average temperature
- 15.6°C (60°F)
- Humidity
- 67%
- Days of 25°C or more
- 1.2 days
Early, mid and late April
| Days | High | Low | Precipitation |
|---|---|---|---|
| 1–10 April | 18.6°C | 10.3°C | 48.4 mm |
| 11–20 April | 19.8°C | 11.7°C | 47.5 mm |
| 21–30 April | 21.2°C | 13.2°C | 57.2 mm |
By the last ten days of April the average high in Nagasaki is 2.6°C higher than in the first ten.
By ten-day totals, 21–30 April is the wettest (57.2 mm) and 11–20 April the driest (47.5 mm).
What to wear in Nagasaki in April
- Long sleeves with a light jacket or sweater.
- A folding umbrella: rain falls on 9.2 days.
Pack
- Folding umbrella
Flowers and autumn colour in Nagasaki in April
Cherry blossom
The JMA's sample cherry tree in Nagasaki opens around 23 March and is in full bloom around 2 April in an average year (1991–2020). In 2026 it opened on 27 March and was in full bloom on 3 April.
Dates are for one sample tree at or near the JMA observatory, not for every park in the city.
Holidays and crowds in April
National holidays in April 2027:
- Thu 29 April — Showa Day
In April 2025, hotels and inns across Nagasaki Prefecture were 53.4% full on average (8th busiest of 12 months). Foreign guests spent 79,410 nights there that month (Japan Tourism Agency). That compares with 58.3% in March and 58.2% in May.
Frequently asked questions
What is the weather like in Nagasaki in April?
The average high is 19.9°C (68°F) and the average low 11.7°C (53°F). 153.0 mm of rain falls on about 9.2 days (JMA, 1991–2020).
What should I wear in Nagasaki in April?
Long sleeves with a light jacket or sweater. A folding umbrella: rain falls on 9.2 days.
Is Nagasaki busy in April?
In April 2025, hotels and inns across Nagasaki Prefecture were 53.4% full on average (8th busiest of 12 months). Foreign guests spent 79,410 nights there that month (Japan Tourism Agency).
What are the record temperatures for April in Nagasaki?
The highest temperature the JMA has recorded in Nagasaki in April is 29.0°C (84°F), on 29 April 1998. The lowest is 0.2°C (32°F), on 3 April 1884.
What events are on in Nagasaki in April?
Kazagashira Park Cherry Blossom Festival: Usually late March into early April. Tateyama Park Cherry Blossom Festival: Usually late March into early April. Dejima Oranje Festival: Late April, two days. Inasayama Azalea Festival: Usually late April to early May.
When do the cherry blossoms open in Nagasaki?
The JMA's sample cherry tree in Nagasaki opens around 23 March and is in full bloom around 2 April in an average year (1991–2020). In 2026 it opened on 27 March and was in full bloom on 3 April.
April records in Nagasaki
The extremes the JMA has measured in April at its Nagasaki station.
- Hottest April day
- 29.0°C (84°F) on 29 April 1998 (records since 1879)
- Coldest April night
- 0.2°C (32°F) on 3 April 1884 (records since 1879)
- Wettest April day
- 345.4 mm on 11 April 1882 (records since 1879)
What's on in Nagasaki in April
| Event | When | Where and what |
|---|---|---|
| Kazagashira Park Cherry Blossom Festival風頭公園桜まつり | Usually late March into early April. 27 March – 5 April 2026. | Kazagashira Park, Nagasaki City. Lanterns are lit on about 350 Somei Yoshino trees during the festival. 2027 dates not yet announced. Official page |
| Tateyama Park Cherry Blossom Festival立山公園さくらまつり | Usually late March into early April. 27 March – 5 April 2026. | Tateyama Park, Nagasaki City. A cherry blossom festival at the park. 2027 dates not yet announced. Official page |
| Dejima Oranje Festival出島オラニエ・フェスティバル | Late April, two days. 25–26 April 2026. | Lawn Hiroma, Dejima. Booths with local products are set up on the Dejima lawn. 2027 dates not yet announced. Official page |
| Inasayama Azalea Festival稲佐山つつじまつり | Usually late April to early May. 25 April – 10 May 2026. | Mount Inasa, Nagasaki City. A festival during the azalea season on Mount Inasa. 2027 dates not yet announced. Official page |
Nagasaki before and after April
Other places in April
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Sources for this page
Show all 14
- Normals for 1991–2020: Nagasaki (長崎), month by month (平年値 年・月ごとの値)Japan Meteorological Agency (JMA)
- Normals for 1991–2020: Nagasaki (長崎), rain days, temperature days and snow (詳細)Japan Meteorological Agency (JMA)
- Ten-day normals for 1991–2020: Nagasaki (長崎) (平年値 旬ごとの値)Japan Meteorological Agency (JMA)
- Records for April: Nagasaki (長崎) (観測史上1〜10位の値)Japan Meteorological Agency (JMA)
- Sunrise and sunset by prefectural capital (各地のこよみ)National Astronomical Observatory of Japan (NAOJ)
- Cherry blossom opening dates, 2021–2026 (さくらの開花日)Japan Meteorological Agency (JMA)
- Cherry blossom full-bloom dates, 2021–2026 (さくらの満開日)Japan Meteorological Agency (JMA)
- Yearly records of flowering and leaf colour since 1953 (生物季節観測累年値)Japan Meteorological Agency (JMA)
- National holidays (国民の祝日について)Cabinet Office
- Overnight Travel Statistics Survey, 2025 final figures (宿泊旅行統計調査 2025年 年の確定値)Japan Tourism Agency
- Kazagashira Park Cherry Blossom Festival (風頭公園桜まつり)Nagasaki City Tourism (travel nagasaki)
- Tateyama Park Cherry Blossom Festival (立山公園さくらまつり)Nagasaki City Tourism (travel nagasaki)
- Dejima Oranje Festival (出島オラニエ・フェスティバル)Nagasaki City Tourism (travel nagasaki)
- Inasayama Azalea Festival (稲佐山つつじまつり)Nagasaki City Tourism (travel nagasaki)