Sri Lanka Colombo Weather in April — Climate Guide
April in Colombo is moderate
April is moderate for Colombo.
April is the inter-monsoon transition in Colombo — still hot and sunny in the mornings, but with frequent thundery downpours building in the afternoons. It averages 32°C/25°C with rising rainfall (about 230mm).
The cultural highlight is the Sinhala and Tamil New Year in mid-April — Sri Lanka's biggest holiday. The city goes quiet for a couple of days as families gather, many shops and restaurants close, and customs, sweets, and rituals take over. It's an atmospheric but logistically slower time to visit.
Travel score
Colombo April Weather Stats
Avg High
32°C
Avg Low
25°C
Rainy Days
14
230mm total
Sunshine
7.5h
Daily avg
Humidity
78%
muggy
UV Index
12
Extreme
Wind
10 km/h
Gusts 20
Crowds
Moderate
At attractions
April Sunrise & Sunset
Air Quality
PM2.5
22 μg/m³
PM10
40 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
39°C
Nighttime
27°C
Humidity and wind affect how the actual temperature feels.
Wind
10 km/h
Max gust 20 km/h
Activities Recommended for April
April Travel Pros & Cons
Pros
- Mornings still sunny and warm
- Experience Sinhala & Tamil New Year customs
- Quieter and better value than peak season
- Beaches still good early in the day
Cons
- Frequent thundery afternoon showers
- New Year closures slow the city (mid-April)
- Whale season winding down
- Hot, humid, extreme UV
April Events & Festivals
- Sinhala & Tamil New Year (mid-April) — biggest cultural holiday; quiet, shuttered city
- Bak Poya full-moon day
- First inter-monsoon rains build
- Sea conditions for whales begin to fade
Colombo in April — Full Picture
April is the inter-monsoon transition in Colombo — still hot and sunny in the mornings, but with frequent thundery downpours building in the afternoons. It averages 32°C/25°C with rising rainfall (about 230mm).
The cultural highlight is the Sinhala and Tamil New Year in mid-April — Sri Lanka's biggest holiday. The city goes quiet for a couple of days as families gather, many shops and restaurants close, and customs, sweets, and rituals take over. It's an atmospheric but logistically slower time to visit.
Mornings are still good for sightseeing and the beach; afternoons can be washed out by storms. Whale-watching season off Mirissa winds down toward the end of the month.
Note: plan around the New Year closures, expect short but heavy rains, and keep an umbrella handy. Heat and UV remain extreme.
What to Wear & What to Pack
Inter-monsoon transition — hot and humid around 32°C/25°C with frequent thundery afternoon showers. Light clothing, SPF 50+ (extreme UV), and an umbrella or light rain jacket. A sarong for temples and a layer for strong air conditioning.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current31.7°C
25°C
13/mo
Summer (Jun·Jul·Aug)
30°C
26°C
12/mo
Autumn (Sep·Oct·Nov)
30°C
24.3°C
16/mo
Winter (Dec·Jan·Feb)
30.7°C
23°C
8.3/mo
Colombo Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 31° | 23° | 8d·60mm | 8h | 75% | 11 | Busy | Peak |
| February (Best) | 31° | 23° | 6d·70mm | 9h | 73% | 12 | Busy | Peak |
| March (Best) | 32° | 24° | 8d·110mm | 8.5h | 75% | 12 | Busy | Shoulder |
| 32° | 25° | 14d·230mm | 7.5h | 78% | 12 | Moderate | Shoulder | |
| 31° | 26° | 17d·350mm | 6.5h | 80% | 11 | Quiet | Low season | |
| 30° | 26° | 15d·220mm | 6.5h | 79% | 11 | Quiet | Low season | |
| 30° | 26° | 11d·135mm | 7h | 78% | 11 | Moderate | Shoulder | |
| 30° | 26° | 10d·110mm | 7.5h | 77% | 11 | Moderate | Shoulder | |
| 30° | 25° | 12d·160mm | 7h | 78% | 11 | Quiet | Low season | |
| 30° | 24° | 19d·350mm | 6h | 80% | 11 | Quiet | Low season | |
| 30° | 24° | 17d·320mm | 6.5h | 80% | 11 | Moderate | Shoulder | |
| December (Best) | 30° | 23° | 11d·150mm | 7.5h | 77% | 11 | Busy | Peak |
View Other Months
Colombo April Hotel Picks
Frequently Asked Questions
Is April a good time to visit Colombo?
Colombo in April is moderate. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Colombo in April?
Colombo April averages a high of 32°C and a low of 25°C.
Does it rain much in Colombo in April?
Colombo April averages 230mm of rainfall over about 14 rainy days.
What should I wear in Colombo in April?
Inter-monsoon transition — hot and humid around 32°C/25°C with frequent thundery afternoon showers. Light clothing, SPF 50+ (extreme UV), and an umbrella or light rain jacket. A sarong for temples and a layer for strong air conditioning.
What time are sunrise and sunset in Colombo in April?
Colombo April sunrise is 06:05 and sunset is 18:15, with 12h 10min of daylight.
What's the air quality like in Colombo in April?
Colombo April air quality (AQI) averages 52, rated Moderate. PM2.5 averages 22μg/m³.
What activities are recommended in Colombo in April?
In April, Colombo is great for Sinhala & Tamil New Year customs (mid-April), Morning beach and city visits, Temple and museum touring.
Is April peak season in Colombo?
Colombo April crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit Colombo
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.