Pai in Spring

In spring (March, April and May), Pai sees average daytime highs around 32°C and overnight lows near 19°C, with 273 mm of rain over about 32 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 32°C. The sky is clear or mostly clear about 51% of the time across spring, and the air most often feels muggy.

Spring is Pai's 3rd-best season to visit on our travel score. For the whole year in context, see Pai's year-round climate.

Avg daytime high: 32°C; warmest season of the year
Avg overnight low: 19°C
Rainfall: 273 mm; 32 wet days
Avg wind: 5 km/h
Travel score: 3.9; 3rd-best season
Months: Mar · Apr · May

← Winter Pai year-round climate Summer →

Spring Summer Fall Winter

Temperature in Pai in Spring

Average highAverage lowShaded bands: 10–90% of days

Across spring, daytime highs hold fairly steady around 32°C.

A typical spring day in Pai reaches about 32°C and drops to 19°C overnight. The warmest of the three months is April, the coolest March.

How spring really feels in Pai

Once humidity and wind are folded in, spring brings about 85 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.

Pai 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° / 12°	16	2.4	11	8.2
Feb	30° / 13°	7	1.4	11.3	6.6
Mar	32° / 16°	21	3.3	11.9	4.8
Apr	33° / 20°	60	7.7	12.4	3.7
May	31° / 21°	193	20.7	12.9	3.3
Jun	29° / 22°	221	25.4	13.1	3.1
Jul	29° / 22°	287	27.7	13.1	3.2
Aug	28° / 21°	321	29	12.7	3.1
Sep	29° / 21°	248	25.6	12.1	3.4
Oct	28° / 20°	116	17.6	11.6	4.9
Nov	27° / 17°	37	6.6	11.1	7.2
Dec	26° / 14°	16	3.2	10.9	8.2

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time across spring.

Chance of precipitation in Spring

Any precipitation

Pai gets around 273 mm of rain over 32 wet days across spring. The line is the day-by-day chance of measurable precipitation.

Humidity in Spring

DryComfortableHumidMuggyOppressiveMiserable

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 5 km/h across spring.

Sunrise & sunset in Spring

DaylightNight

Daylight runs from about 11 h 36 min in early March to 13 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 6.0 kWh/m².

Planning a trip in spring

Hazard calendar for Pai

In seasonPeak

In spring, Pai overlaps its monsoon season. The full year is below, with each hazard's peak months called out.

Pai's monsoon runs May–September, when most of the year's rain falls.

Monsoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is spring a good time to visit Pai?

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.

3.9

Sightseeing

3rd-best month of the year

6.5

Beach & pool

2nd-best month of the year

spring is a weaker month for outdoor sightseeing in Pai. The water and warmth also suit a beach or pool day.

What to pack for Pai in Spring

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

In spring, Pai sees daytime highs around 32°C and nights near 19°C. Pack light clothes, rain gear and sun protection. About 32 days see rain.

light clothesrain gearsun protection

UV index in Pai in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Pai peaks around August 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 7 (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)	8	10	10	10	12	12	13	14	12	11	9	7
Level	Very high	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	8	Very high
Feb	10	Very high
Mar	10	Very high
Apr	10	Extreme
May	12	Extreme
Jun	12	Extreme
Jul	13	Extreme
Aug	14	Extreme
Sep	12	Extreme
Oct	11	Extreme
Nov	9	Very high
Dec	7	Very high

Air quality in Pai 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 Pai is worst in March — around 90 µg/m³ PM2.5 (unhealthy), about 9.6× the cleanest month (October, 9 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)	14	35	90	57	20	11	10	10	10	9	9	11
Level	Moderate	Moderate	Unhealthy	Unhealthy	Moderate	Good	Good	Good	Good	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	14	Moderate
Feb	35	Moderate
Mar	90	Unhealthy
Apr	57	Unhealthy
May	20	Moderate
Jun	11	Good
Jul	10	Good
Aug	10	Good
Sep	10	Good
Oct	9	Good
Nov	9	Good
Dec	11	Good

Location & terrain

Where is Pai?

Pai sits at 19.4°N, 98.4°E, 0 m above sea level, in Thailand. The nearest listed city is Chiang Mai, 86 km away.

Topography around Pai

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

Within 3 km, the terrain around Pai has significant variations in elevation — a maximum elevation change of 444 m around an average of 563 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,543 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,997 m.

The land around Pai is covered by trees (48%), grassland (23%) and cropland (21%) within 3 km, trees (86%) within 16 km, and trees (91%) within 80 km.

3 km

444 m

trees 48%

16 km

1,543 m

trees 86%

80 km

1,997 m

trees 91%

treesgrasslandcroplandartificial surfaces

← Winter Pai year-round climate Summer →

Spring weather nearby: Chiang Mai 86 km · Hang Dong 90 km · San Pa Tong 95 km · San Kamphaeng 99 km · Lamphun 105 km · Pa Sang 107 km · Loikaw 134 km · Phayao 152 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 Pai (19.3617°, 98.4397°, 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.