Siem Reap in April
In April, Siem Reap averages 35°C (95°F) during the day and 25°C (77°F) at night, with around 7 days of rain (90 mm total).
Off-peakConditions are very hot — early-morning and evening sightseeing recommended. Occasional showers are likely but won't dominate.
April in Siem Reap is outside the typical sweet spot for sightseeing weather. It can still be a great time to visit if you have specific reasons (festivals, off-season pricing, etc.).
How April compares to the rest of the year in Siem Reap
April is one of the warmest months in Siem Reap (2nd of 12) and moderately rainy compared to the rest of the year (8th of 12). Daytime temperature runs 3°C above the annual average (33°C). April runs roughly the same as March (35°C) and cools 1°C in May (34°C).
April sunrise & sunset in Siem Reap
Times shown for Siem Reap local time (Asia/Phnom_Penh), calculated for the 15th of April. They shift by a few minutes day to day across the month.
Photography light in Siem Reap — April
Golden-hour and blue-hour windows for the 15th of April, in Siem Reap's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Siem Reap in April
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on April's tier (Off-peak) and Siem Reap's popularity.
Crowds & pricing — April in Siem Reap
This is off-peak for Siem Reap — the lowest prices of the year and the fewest crowds, but with real trade-offs: some restaurants, hotels, and beach businesses may close for the season; weather conditions can make outdoor activities unpredictable; and a handful of seasonal sights run reduced hours or close entirely. Great if you prefer a quiet local rhythm and don't mind the climate giving you reasons to choose indoor activities.
Why this tier: challenging tourism weather
Sun & mosquito risk — April in Siem Reap
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Siem Reap in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 32°C / 90°F | 20°C / 68°F | 5 mm | 1 | 0 |
| February | 33°C / 91°F | 21°C / 70°F | 5 mm | 1 | 0 |
| March | 35°C / 95°F | 23°C / 73°F | 30 mm | 3 | 0 |
| April | 35°C / 95°F | 25°C / 77°F | 90 mm | 7 | 0 |
| May | 34°C / 93°F | 25°C / 77°F | 170 mm | 11 | 0 |
| June | 33°C / 91°F | 25°C / 77°F | 210 mm | 15 | 0 |
| July | 32°C / 90°F | 25°C / 77°F | 200 mm | 16 | 0 |
| August | 32°C / 90°F | 25°C / 77°F | 230 mm | 18 | 0 |
| September | 31°C / 88°F | 25°C / 77°F | 275 mm | 18 | 0 |
| October | 31°C / 88°F | 24°C / 75°F | 260 mm | 15 | 0 |
| November | 31°C / 88°F | 23°C / 73°F | 135 mm | 9 | 0 |
| December | 31°C / 88°F | 21°C / 70°F | 30 mm | 3 | 0 |
Other cities with similar April weather
🌍 See the full ranked list of climate twins for Siem Reap in April →
Frequently asked questions
How hot is Siem Reap in April?
In April, Siem Reap averages a high of 35°C (95°F) and a low of 25°C (77°F) — generally hot.
Does it rain a lot in Siem Reap in April?
April sees occasional rain in Siem Reap, with about 7 rainy days on average.
Is April a good time to visit Siem Reap?
April is hot. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Siem Reap in April?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full April packing list for Siem Reap for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.