Okayama in Spring

In spring (March, April and May), Okayama sees average daytime highs around 19°C and overnight lows near 10°C, with 325 mm of rain over about 29 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.

Over the season highs climb from about 12°C in early March to 25°C by late May. The sky is clear or mostly clear about 30% of the time across spring, and the air most often feels dry.

Spring is Okayama's 2nd-best season to visit on our travel score. For the whole year in context, see Okayama's year-round climate.

Avg daytime high: 19°C; 3rd-warmest season
Avg overnight low: 10°C
Rainfall: 325 mm; 29 wet days
Avg wind: 10 km/h
Travel score: 5.8; 2nd-best season
Months: Mar · Apr · May

← Winter Okayama year-round climate Summer →

Spring Summer Fall Winter

Temperature in Okayama in Spring

Average highAverage lowShaded bands: 10–90% of days

Over the season highs climb from about 12°C in early March to 25°C by late May.

A typical spring day in Okayama reaches about 19°C and drops to 10°C overnight. The warmest of the three months is May, the coolest March.

How spring really feels in Okayama

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.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

spring sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Okayama 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	Snow days	Daylight (hours)	Travel score
Jan	10° / 2°	40	5.5	0.3	9.9	2.4
Feb	11° / 2°	48	6.4	0.6	10.7	2.8
Mar	14° / 5°	92	9.3	0.1	11.7	4.3
Apr	20° / 10°	108	9.7	0	12.8	6.2
May	24° / 15°	125	9.9	0	13.8	6.8
Jun	27° / 20°	172	12.2	0	14.3	5.8
Jul	31° / 24°	187	13.6	0	14.1	4.0
Aug	33° / 25°	108	10.3	0	13.3	3.6
Sep	29° / 21°	168	10.8	0	12.2	5.5
Oct	23° / 14°	114	7.7	0	11.1	7.2
Nov	18° / 8°	57	6.1	0	10.2	6.2
Dec	12° / 4°	46	5.3	0.1	9.7	3.7

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time across spring.

Chance of precipitation in Spring

Any precipitation

Okayama gets around 325 mm of rain over 29 wet days across spring. The line is the day-by-day chance of measurable precipitation.

Humidity in Spring

DryComfortableHumidMuggyOppressiveMiserable

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 10 km/h across spring.

Sunrise & sunset in Spring

DaylightNight

Daylight runs from about 11 h 12 min in early March to 14 h 06 min by late May. The lit band spans sunrise to sunset each day.

Solar energy in Spring

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across spring, about 5.2 kWh/m².

Planning a trip in spring

Hazard calendar for Okayama

In seasonPeak

In spring, Okayama overlaps its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

Okayama sits in the Pacific typhoon belt; the season peaks July–October.

Okayama's rainy season runs March–October, when most of the year's rain falls.

Pacific typhoon

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is spring a good time to visit Okayama?

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.

5.8

Sightseeing

2nd-best month of the year

3.0

Beach & pool

3rd-best month of the year

spring is a reasonable time to visit Okayama for sightseeing.

What to pack for Okayama in Spring

From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In spring, Okayama sees daytime highs around 19°C and nights near 10°C. Worth packing: light clothes, a warm layer, rain gear and sun protection. About 29 days see rain.

light clothesa warm layerrain gearsun protection

Sea temperature near Okayama in Spring

The nearest coast averages about 15°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 41 km away) is warmest in August at about 27°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 7 to Nov 12 — about 5.2 months when the water holds above 20°C.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	14	13	13	15	17	21	25	27	26	24	20	16
Comfort	Bracing	Bracing	Bracing	Bracing	Cool	Refreshing	Warm	Warm	Warm	Refreshing	Cool	Cool

	Sea temperature (°C)	Comfort
Jan	14	Bracing
Feb	13	Bracing
Mar	13	Bracing
Apr	15	Bracing
May	17	Cool
Jun	21	Refreshing
Jul	25	Warm
Aug	27	Warm
Sep	26	Warm
Oct	24	Refreshing
Nov	20	Cool
Dec	16	Cool

UV index in Okayama in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Okayama peaks around July 13 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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)	3	4	5	7	8	10	10	9	9	6	4	2
Level	Moderate	Moderate	High	Very high	Very high	Very high	Extreme	Very high	Very high	High	Moderate	Moderate

	UV index (midday)	Level
Jan	3	Moderate
Feb	4	Moderate
Mar	5	High
Apr	7	Very high
May	8	Very high
Jun	10	Very high
Jul	10	Extreme
Aug	9	Very high
Sep	9	Very high
Oct	6	High
Nov	4	Moderate
Dec	2	Moderate

Air quality in Okayama in Spring

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.

Air quality in Okayama is worst in April — around 15 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 8 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Okayama's WHO annual average of 11 µg/m³.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	10	12	14	15	14	12	10	10	9	8	9	9
Level	Good	Good	Moderate	Moderate	Moderate	Moderate	Good	Good	Good	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	10	Good
Feb	12	Good
Mar	14	Moderate
Apr	15	Moderate
May	14	Moderate
Jun	12	Moderate
Jul	10	Good
Aug	10	Good
Sep	9	Good
Oct	8	Good
Nov	9	Good
Dec	9	Good

Location & terrain

Where is Okayama?

Okayama sits at 34.6°N, 133.9°E, 5 m above sea level, in Japan. The nearest listed city is Tamano, 15 km away.

Topography around Okayama

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Okayama.

Within 3 km, the terrain around Okayama has only modest variations in elevation — a maximum elevation change of 171 m around an average of 13 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 503 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,811 m.

The land around Okayama is covered by artificial surfaces (79%) within 3 km, trees (41%) and artificial surfaces (26%) within 16 km, and trees (61%) and water (26%) within 80 km.

3 km

171 m

artificial surfaces 79%

16 km

503 m

trees 41%

80 km

1,811 m

trees 61%

treesgrasslandcroplandartificial surfacesbare terrainwater

← Winter Okayama year-round climate Summer →

Spring weather nearby: Tamano 15 km · Sōja 17 km · Kurashiki 17 km · Setouchi 19 km · Akaiwa 20 km · Naoshima 22 km · Bizen 32 km · Takahashi 33 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 Okayama (34.65°, 133.9333°, 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.