Siem Reap in Spring

In spring (March, April and May), Siem Reap sees average daytime highs around 34°C and overnight lows near 27°C, with 294 mm of rain over about 43 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 34°C. The sky is clear or mostly clear about 31% of the time across spring, and the air most often feels miserable.

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

Avg daytime high: 34°C; warmest season of the year
Avg overnight low: 27°C
Rainfall: 294 mm; 43 wet days
Avg wind: 7 km/h
Travel score: 2.6; 3rd-best season
Months: Mar · Apr · May

← Winter Siem Reap year-round climate Summer →

Spring Summer Fall Winter

Temperature in Siem Reap in Spring

Average highAverage lowShaded bands: 10–90% of days

Across spring, daytime highs hold fairly steady around 34°C.

A typical spring day in Siem Reap reaches about 34°C and drops to 27°C overnight. The warmest of the three months is April, the coolest March.

How spring really feels in Siem Reap

Once humidity and wind are folded in, spring brings about 92 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C

80 feel dangerously hot (≥ 39°C)

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.

Siem Reap 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	31° / 23°	9	1.9	11.3	5.5
Feb	33° / 24°	13	2.6	11.6	4.5
Mar	34° / 26°	52	7.8	11.9	3.2
Apr	35° / 27°	94	13.5	12.3	2.5
May	34° / 27°	148	21.4	12.6	2.2
Jun	33° / 27°	132	20.7	12.8	2.4
Jul	32° / 27°	135	22.1	12.7	2.6
Aug	32° / 26°	162	24.4	12.4	2.4
Sep	31° / 26°	244	25.9	12.1	2.5
Oct	31° / 25°	224	23.3	11.7	3.1
Nov	31° / 24°	62	8.8	11.4	4.7
Dec	30° / 23°	16	2.9	11.2	5.7

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time across spring.

Chance of precipitation in Spring

Any precipitation

Siem Reap gets around 294 mm of rain over 43 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 7 km/h across spring.

Sunrise & sunset in Spring

DaylightNight

Daylight runs from about 11 h 42 min in early March to 12 h 42 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 Siem Reap

In seasonPeak

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

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

Siem Reap's rainy season runs May–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 Siem Reap?

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.

2.6

Sightseeing

3rd-best month of the year

5.3

Beach & pool

2nd-best month of the year

spring is a weaker month for outdoor sightseeing in Siem Reap.

What to pack for Siem Reap in Spring

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

In spring, Siem Reap sees daytime highs around 34°C and nights near 27°C. Pack light clothes, rain gear and sun protection. About 43 days see rain.

light clothesrain gearsun protection

UV index in Siem Reap in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Siem Reap peaks around August 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 22 at about 8 (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	10	12	12	11	12	13	14	12	11	8	8
Level	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

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

Air quality in Siem Reap 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 Siem Reap is worst in February — around 40 µg/m³ PM2.5 (poor), about 2.9× the cleanest month (November, 14 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)	29	40	40	37	19	15	16	15	15	17	14	14
Level	Moderate	Poor	Poor	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	29	Moderate
Feb	40	Poor
Mar	40	Poor
Apr	37	Poor
May	19	Moderate
Jun	15	Moderate
Jul	16	Moderate
Aug	15	Moderate
Sep	15	Moderate
Oct	17	Moderate
Nov	14	Moderate
Dec	14	Moderate

Location & terrain

Where is Siem Reap?

Siem Reap sits at 13.4°N, 103.9°E, 18 m above sea level, in Cambodia. The nearest listed city is Yeang, 34 km away.

Topography around Siem Reap

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

Within 3 km, the terrain around Siem Reap has only modest variations in elevation — a maximum elevation change of 28 m around an average of 17 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 123 m; within 80 km, significant variations in elevation — a maximum elevation change of 484 m.

The land around Siem Reap is covered by artificial surfaces (60%) and trees (24%) within 3 km, cropland (45%) and trees (30%) within 16 km, and cropland (48%) and trees (30%) within 80 km.

3 km

28 m

artificial surfaces 60%

16 km

123 m

cropland 45%

80 km

484 m

cropland 48%

treesgrasslandcroplandartificial surfacesbare terrainwaterwetland

← Winter Siem Reap year-round climate Summer →

Spring weather nearby: Yeang 34 km · Phum Ânlŭng Vĭl 74 km · Battambang 77 km · Phumĭ Tnaôt 89 km · Pursat 92 km · Samraong 98 km · Sisophon 99 km · Anlong Veaeng 100 km

Cambodia travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type A / C / G; 230 V · 50 Hz
Prices: ≈ 34% of US; price level, 2025
GDP per capita: $2,872; 2025
Happiness: 4.5 / 10; World Happiness, 2025
Safe drinking water: 30%; of population, 2024
Homicide rate: 1.8; per 100k, 2011
Road deaths: 19.6; per 100k/yr, 2019
Income group: Lower middle; World Bank
English: Very low; EF EPI 390
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 Siem Reap (13.3618°, 103.8606°, elevation 18 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.