Katsuren-haebaru in Spring
In spring (March, April and May), Katsuren-haebaru sees average daytime highs around 22°C and overnight lows near 21°C, with 485 mm of rain over about 39 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs climb from about 20°C in early March to 25°C by late May. The sky is clear or mostly clear about 23% of the time across spring, and the air most often feels muggy.
Spring is Katsuren-haebaru's 2nd-best season to visit on our travel score. For the whole year in context, see Katsuren-haebaru's year-round climate.
- Avg daytime high
- 22°C
- 3rd-warmest season
- Avg overnight low
- 21°C
- Rainfall
- 485 mm
- 39 wet days
- Avg wind
- 23 km/h
- Travel score
- 6.0
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in Katsuren-haebaru in Spring
Over the season highs climb from about 20°C in early March to 25°C by late May.
A typical spring day in Katsuren-haebaru reaches about 22°C and drops to 21°C overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Katsuren-haebaru
Once humidity and wind are folded in, spring brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
spring sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Katsuren-haebaru 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 | 19° / 17° | 103 | 11.7 | 10.5 | 5.7 |
| Feb | 19° / 17° | 96 | 11.4 | 11.1 | 5.6 |
| Mar | 20° / 18° | 128 | 12.7 | 11.8 | 5.9 |
| Apr | 22° / 20° | 150 | 12.7 | 12.6 | 6.1 |
| May | 24° / 23° | 207 | 13.8 | 13.3 | 6.1 |
| Jun | 27° / 26° | 218 | 15.8 | 13.6 | 5.4 |
| Jul | 29° / 27° | 126 | 11.4 | 13.5 | 5.5 |
| Aug | 29° / 27° | 178 | 14.8 | 12.9 | 5.1 |
| Sep | 28° / 27° | 199 | 14.2 | 12.2 | 5.7 |
| Oct | 26° / 25° | 141 | 11.6 | 11.4 | 6.5 |
| Nov | 24° / 22° | 101 | 10.6 | 10.7 | 6.7 |
| Dec | 21° / 19° | 113 | 11.2 | 10.4 | 6.1 |
Cloud cover in Spring
The sky is clear or mostly clear about 23% of the time across spring.
Chance of precipitation in Spring
Katsuren-haebaru gets around 485 mm of rain over 39 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 23 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 24 min in early March to 13 h 30 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 4.8 kWh/m².
Hazard calendar for Katsuren-haebaru
In spring, Katsuren-haebaru overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Katsuren-haebaru sits in the Pacific typhoon belt; the season peaks July–October.
Is spring a good time to visit Katsuren-haebaru?
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 Katsuren-haebaru for sightseeing.
What to pack for Katsuren-haebaru in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Katsuren-haebaru sees daytime highs around 22°C and nights near 21°C. Pack rain gear. Worth having: light clothes, sun protection and a windbreaker. About 39 days see rain.
Sea temperature near Katsuren-haebaru in Spring
The nearest coast averages about 23°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 29°C and coldest in February near 22°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 22 | 22 | 22 | 23 | 25 | 27 | 29 | 29 | 28 | 27 | 25 | 24 |
| Comfort | Refreshing | Refreshing | Refreshing | Refreshing | Warm | Warm | Tropical | Tropical | Tropical | Warm | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 22 | Refreshing |
| Feb | 22 | Refreshing |
| Mar | 22 | Refreshing |
| Apr | 23 | Refreshing |
| May | 25 | Warm |
| Jun | 27 | Warm |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 28 | Tropical |
| Oct | 27 | Warm |
| Nov | 25 | Warm |
| Dec | 24 | Refreshing |
UV index in Katsuren-haebaru in Spring
Clear-sky midday UV across spring averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Katsuren-haebaru peaks around July 11 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 5 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 5 | 7 | 9 | 8 | 10 | 12 | 12 | 11 | 11 | 8 | 7 | 5 |
| Level | High | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Very high | High | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 5 | High |
| Feb | 7 | Very high |
| Mar | 9 | Very high |
| Apr | 8 | Very high |
| May | 10 | Very high |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 11 | Extreme |
| Sep | 11 | Extreme |
| Oct | 8 | Very high |
| Nov | 7 | High |
| Dec | 5 | Moderate |
Air quality in Katsuren-haebaru 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 Katsuren-haebaru is worst in March — around 17 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (July, 8 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) | 12 | 14 | 17 | 16 | 13 | 9 | 8 | 10 | 9 | 9 | 10 | 10 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 12 | Good |
| Feb | 14 | Moderate |
| Mar | 17 | Moderate |
| Apr | 16 | Moderate |
| May | 13 | Moderate |
| Jun | 9 | Good |
| Jul | 8 | Good |
| Aug | 10 | Good |
| Sep | 9 | Good |
| Oct | 9 | Good |
| Nov | 10 | Good |
| Dec | 10 | Good |
Where is Katsuren-haebaru?
Katsuren-haebaru sits at 26.3°N, 127.9°E, 9 m above sea level, in Japan. The nearest listed city is Gushikawa, 3.0 km away.
Topography around Katsuren-haebaru
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Katsuren-haebaru.
Within 3 km, the terrain around Katsuren-haebaru has only modest variations in elevation — a maximum elevation change of 97 m around an average of 14 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 358 m; within 80 km, significant variations in elevation — a maximum elevation change of 491 m.
The land around Katsuren-haebaru is covered by water (47%), artificial surfaces (24%) and trees (22%) within 3 km, water (64%) within 16 km, and water (91%) 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 Katsuren-haebaru (26.3329°, 127.874°, elevation 9 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.