Choshi in Spring
In spring (March, April and May), Choshi sees average daytime highs around 16°C and overnight lows near 12°C, with 396 mm of precipitation over about 38 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs climb from about 11°C in early March to 21°C by late May. The sky is clear or mostly clear about 29% of the time across spring, and the air most often feels dry.
Spring is Choshi's 3rd-best season to visit on our travel score. For the whole year in context, see Choshi's year-round climate.
- Avg daytime high
- 16°C
- 3rd-warmest season
- Avg overnight low
- 12°C
- Precipitation
- 396 mm
- 38 wet days
- Avg wind
- 19 km/h
- Travel score
- 4.6
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Choshi in Spring
Over the season highs climb from about 11°C in early March to 21°C by late May.
A typical spring day in Choshi reaches about 16°C and drops to 12°C overnight. The warmest of the three months is May, the coolest March.
Choshi weather by month
How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 10° / 5° | 94 | 9.3 | 9.9 | 2.2 |
| Feb | 10° / 5° | 87 | 9.6 | 10.6 | 2.2 |
| Mar | 12° / 8° | 142 | 13.7 | 11.7 | 3.1 |
| Apr | 16° / 12° | 119 | 12.6 | 12.9 | 4.8 |
| May | 20° / 16° | 134 | 11.9 | 13.9 | 5.9 |
| Jun | 23° / 20° | 165 | 12.9 | 14.4 | 5.9 |
| Jul | 26° / 23° | 133 | 12 | 14.2 | 6.2 |
| Aug | 28° / 24° | 88 | 9.9 | 13.4 | 6.3 |
| Sep | 25° / 22° | 170 | 13.1 | 12.2 | 6.1 |
| Oct | 21° / 18° | 226 | 13.9 | 11.1 | 5.9 |
| Nov | 17° / 13° | 122 | 11.8 | 10.1 | 5.1 |
| Dec | 12° / 8° | 91 | 10 | 9.6 | 3.4 |
Cloud cover in Spring
The sky is clear or mostly clear about 29% of the time across spring.
Chance of precipitation in Spring
Choshi gets around 396 mm of rain and snow over 38 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 19 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 12 min in early March to 14 h 12 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 4.9 kWh/m².
Hazard calendar for Choshi
In spring, Choshi overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Choshi sits in the Pacific typhoon belt; the season peaks July–October.
Is spring a good time to visit Choshi?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Choshi for sightseeing.
What to pack for Choshi in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Choshi sees daytime highs around 16°C and nights near 12°C. Worth packing: a warm layer, rain gear and sun protection. About 38 days see rain.
Sea temperature near Choshi in Spring
The nearest coast averages about 17°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 13 km away) is warmest in August at about 25°C and coldest in February near 15°C.
It's comfortable for a long swim from Jun 5 to Nov 22 — about 5.6 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 16 | 15 | 15 | 16 | 19 | 21 | 23 | 25 | 25 | 23 | 21 | 18 |
| Comfort | Cool | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Warm | Warm | Refreshing | Refreshing | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 16 | Cool |
| Feb | 15 | Cool |
| Mar | 15 | Cool |
| Apr | 16 | Cool |
| May | 19 | Cool |
| Jun | 21 | Refreshing |
| Jul | 23 | Refreshing |
| Aug | 25 | Warm |
| Sep | 25 | Warm |
| Oct | 23 | Refreshing |
| Nov | 21 | Refreshing |
| Dec | 18 | Cool |
UV index in Choshi in Spring
Clear-sky midday UV across spring averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Choshi peaks around August 12 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 4 | 4 | 7 | 8 | 9 | 10 | 10 | 8 | 6 | 4 | 2 |
| Level | Moderate | Moderate | Moderate | High | Very high | Very high | Very high | Extreme | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 4 | Moderate |
| Mar | 4 | Moderate |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 9 | Very high |
| Jul | 10 | Very high |
| Aug | 10 | Extreme |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 2 | Moderate |
Air quality in Choshi in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in Choshi is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 7 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 9 | 11 | 18 | 20 | 19 | 14 | 12 | 11 | 10 | 10 | 9 | 7 |
| Level | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 11 | Good |
| Mar | 18 | Moderate |
| Apr | 20 | Moderate |
| May | 19 | Moderate |
| Jun | 14 | Moderate |
| Jul | 12 | Good |
| Aug | 11 | Good |
| Sep | 10 | Good |
| Oct | 10 | Good |
| Nov | 9 | Good |
| Dec | 7 | Good |
Where is Choshi?
Choshi sits at 35.7°N, 140.8°E, 5 m above sea level, in Japan. The nearest listed city is Hasaki, 0.0 km away.
Topography around Choshi
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Choshi.
Within 3 km, the terrain around Choshi has only modest variations in elevation — a maximum elevation change of 53 m around an average of 11 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 76 m; within 80 km, significant variations in elevation — a maximum elevation change of 452 m.
The land around Choshi is covered by artificial surfaces (37%) and water (31%) within 3 km, water (75%) within 16 km, and water (48%) and trees (23%) within 80 km.
Japan travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 100 V · 50 / 60 Hz
- Prices
- ≈ 65% of US
- price level, 2025
- GDP per capita
- $35,951
- 2025
- Happiness
- 6.1 / 10
- World Happiness, 2025
- Safe drinking water
- 99%
- of population, 2024
- Homicide rate
- 0.2
- per 100k, 2023
- Road deaths
- 3.6
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very low
- EF EPI 446
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Choshi (35.7333°, 140.8333°, elevation 5 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.