Ko Pha-ngan in Spring

In spring (March, April and May), Ko Pha-ngan sees average daytime highs around 29°C and overnight lows near 27°C, with 339 mm of rain over about 45 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.

Across spring, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 33% of the time across spring, and the air most often feels miserable.

Spring is Ko Pha-ngan's 2nd-best season to visit on our travel score. Ko Pha-ngan has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Ko Pha-ngan's year-round climate.

Avg daytime high: 29°C; warmest season of the year
Avg overnight low: 27°C
Rainfall: 339 mm; 45 wet days
Avg wind: 15 km/h
Travel score: 5.1; 2nd-best season
Months: Mar · Apr · May

← Winter Ko Pha-ngan year-round climate Summer →

Spring Summer Fall Winter

Temperature in Ko Pha-ngan in Spring

Average highAverage lowShaded bands: 10–90% of days

Across spring, daytime highs hold fairly steady around 29°C.

A typical spring day in Ko Pha-ngan reaches about 29°C and drops to 27°C overnight. The warmest of the three months is May, the coolest March.

How spring really feels in Ko Pha-ngan

Once humidity and wind are folded in, spring brings about 75 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

The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Ko Pha-ngan 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	27° / 26°	76	8.5	11.5	6.8
Feb	27° / 26°	33	5	11.7	7.3
Mar	28° / 27°	90	8.9	11.9	6.4
Apr	29° / 28°	101	12.9	12.2	5.1
May	29° / 27°	148	22.7	12.4	3.7
Jun	29° / 27°	124	20.6	12.6	3.8
Jul	29° / 27°	114	20.6	12.5	4.0
Aug	29° / 27°	124	19.7	12.3	4.1
Sep	28° / 27°	179	23.5	12.1	3.8
Oct	28° / 26°	304	25.9	11.8	3.9
Nov	28° / 26°	282	20.7	11.6	4.6
Dec	27° / 26°	133	12.1	11.4	6.0

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time across spring.

Chance of precipitation in Spring

Any precipitation

Ko Pha-ngan gets around 339 mm of rain over 45 wet days across spring. The line is the day-by-day chance of measurable precipitation.

Humidity in Spring

DryComfortableHumidMuggyOppressiveMiserable

Most of spring feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.

Wind in Spring

Winds average 15 km/h across spring.

Sunrise & sunset in Spring

DaylightNight

Daylight runs from about 11 h 48 min in early March to 12 h 30 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 6.2 kWh/m².

Planning a trip in spring

Hazard calendar for Ko Pha-ngan

In seasonPeak

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

Ko Pha-ngan sits in the Pacific typhoon belt; the season peaks July–October.

Ko Pha-ngan's rainy season runs September–November, 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 Ko Pha-ngan?

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.

5.1

Sightseeing

2nd-best month of the year

6.2

Beach & pool

2nd-best month of the year

spring is a reasonable time to visit Ko Pha-ngan for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Ko Pha-ngan in Spring

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

In spring, Ko Pha-ngan sees daytime highs around 29°C and nights near 27°C. Pack light clothes, rain gear and sun protection. About 45 days see rain.

light clothesrain gearsun protection

Sea temperature near Ko Pha-ngan in Spring

The nearest coast averages about 30°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 17 km away) is warmest in May at about 30°C and coldest in January near 28°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)	28	28	29	30	30	30	30	29	29	29	29	28
Comfort	Warm	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical

	Sea temperature (°C)	Comfort
Jan	28	Warm
Feb	28	Tropical
Mar	29	Tropical
Apr	30	Tropical
May	30	Tropical
Jun	30	Tropical
Jul	30	Tropical
Aug	29	Tropical
Sep	29	Tropical
Oct	29	Tropical
Nov	29	Tropical
Dec	28	Tropical

UV index in Ko Pha-ngan in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ko Pha-ngan peaks around August 22 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 10 (very 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)	10	12	13	13	13	12	11	14	13	11	10	10
Level	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high

	UV index (midday)	Level
Jan	10	Very high
Feb	12	Extreme
Mar	13	Extreme
Apr	13	Extreme
May	13	Extreme
Jun	12	Extreme
Jul	11	Extreme
Aug	14	Extreme
Sep	13	Extreme
Oct	11	Extreme
Nov	10	Extreme
Dec	10	Very high

Air quality in Ko Pha-ngan 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 Ko Pha-ngan is worst in January — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	16	15	13	14	13	14	15	12	12	11	10	12
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good	Good	Good	Moderate

	PM2.5 (µg/m³)	Level
Jan	16	Moderate
Feb	15	Moderate
Mar	13	Moderate
Apr	14	Moderate
May	13	Moderate
Jun	14	Moderate
Jul	15	Moderate
Aug	12	Good
Sep	12	Good
Oct	11	Good
Nov	10	Good
Dec	12	Moderate

Location & terrain

Where is Ko Pha-ngan?

Ko Pha-ngan sits at 9.8°N, 100.0°E, 0 m above sea level, in Thailand. The nearest listed city is Ko Samui, 27 km away.

Topography around Ko Pha-ngan

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ko Pha-ngan.

Within 3 km, the terrain around Ko Pha-ngan has large variations in elevation — a maximum elevation change of 613 m around an average of 257 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 618 m; within 80 km, large variations in elevation — a maximum elevation change of 805 m.

The land around Ko Pha-ngan is covered by trees (99%) within 3 km, water (85%) within 16 km, and water (92%) within 80 km.

3 km

613 m

trees 99%

16 km

618 m

water 85%

80 km

805 m

water 92%

treeswater

← Winter Ko Pha-ngan year-round climate Summer →

Spring weather nearby: Ko Samui 27 km · Ko Tao 43 km · Surat Thani 103 km · Lang Suan 106 km · Tha Kham 113 km · Chumphon 124 km · Ban Na San 129 km · Nakhon Si Thammarat 147 km

Thailand travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type A / B / C; 230 V · 50 Hz
Prices: ≈ 31% of US; price level, 2025
GDP per capita: $8,057; 2025
Happiness: 6.3 / 10; World Happiness, 2025
Homicide rate: 4.8; per 100k, 2011
Road deaths: 32.2; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: Very low; EF EPI 402
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 Ko Pha-ngan (9.7578°, 100.0291°, elevation 0 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.