Sri Lanka Colombo Weather in June — Climate Guide
June in Colombo is moderate
June is moderate for Colombo.
June sits in the southwest monsoon, with regular rain over Colombo and the western and southern coasts. It averages a warm, humid 30°C/26°C with around 220mm of rain.
Poson, the June full-moon Poya, is a major Buddhist festival marking the introduction of Buddhism to the island; expect temple ceremonies, illuminations, and dansala food stalls, especially around historic religious sites.
Travel score
Colombo June Weather Stats
Avg High
30°C
Avg Low
26°C
Rainy Days
15
220mm total
Sunshine
6.5h
Daily avg
Humidity
79%
muggy
UV Index
11
Extreme
Wind
14 km/h
Gusts 28
Crowds
Quiet
At attractions
June Sunrise & Sunset
Air Quality
PM2.5
17 μg/m³
PM10
32 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
36°C
Nighttime
28°C
Humidity and wind affect how the actual temperature feels.
Wind
14 km/h
Max gust 28 km/h
Activities Recommended for June
June Travel Pros & Cons
Pros
- Poson festival ceremonies (full moon)
- Low-season prices and quiet sights
- East coast dry and good for beaches
- Slightly cooler than the dry season
Cons
- Monsoon rain over the west/south coasts
- Beach plans in Galle/south are unreliable
- High humidity
- Showers can disrupt day trips
June Events & Festivals
- Southwest monsoon continues — wet on the west/south coasts
- Poson Poya (June full moon) — celebrates Buddhism's arrival in Sri Lanka
- Low season — good hotel value
- East coast remains dry and good for beaches
Colombo in June — Full Picture
June sits in the southwest monsoon, with regular rain over Colombo and the western and southern coasts. It averages a warm, humid 30°C/26°C with around 220mm of rain.
Poson, the June full-moon Poya, is a major Buddhist festival marking the introduction of Buddhism to the island; expect temple ceremonies, illuminations, and dansala food stalls, especially around historic religious sites.
It remains low season on the west coast, so the city and Galle are quieter and cheaper, though beach plans there are hit-and-miss with the rain. Showers tend to come in bursts rather than all-day, leaving usable windows.
Note: this is a good time for the east coast (Trincomalee, Arugam Bay), which is in its dry season. In Colombo, plan flexible, indoor-friendly itineraries and carry rain gear; the heat is a touch lower than the dry months.
What to Wear & What to Pack
Southwest monsoon — warm and humid around 30°C/26°C with regular rain, often in heavy bursts. Light quick-dry clothing, umbrella/rain jacket, and water-friendly shoes. SPF for sunny spells; a sarong for temples.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
31.7°C
25°C
13/mo
Summer (Jun·Jul·Aug)
Current30°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 |
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Colombo June Hotel Picks
Frequently Asked Questions
Is June a good time to visit Colombo?
Colombo in June is moderate. Tourist crowds are quiet and flight/hotel prices are low season.
What's the average temperature in Colombo in June?
Colombo June averages a high of 30°C and a low of 26°C.
Does it rain much in Colombo in June?
Colombo June averages 220mm of rainfall over about 15 rainy days.
What should I wear in Colombo in June?
Southwest monsoon — warm and humid around 30°C/26°C with regular rain, often in heavy bursts. Light quick-dry clothing, umbrella/rain jacket, and water-friendly shoes. SPF for sunny spells; a sarong for temples.
What time are sunrise and sunset in Colombo in June?
Colombo June sunrise is 06:00 and sunset is 18:25, with 12h 25min of daylight.
What's the air quality like in Colombo in June?
Colombo June air quality (AQI) averages 42, rated Good. PM2.5 averages 17μg/m³.
What activities are recommended in Colombo in June?
In June, Colombo is great for Poson temple ceremonies (full moon), East-coast beaches (Trincomalee/Arugam Bay), City temples and museums.
Is June peak season in Colombo?
Colombo June crowds are quiet and prices are low season. You can travel relatively comfortably without long queues.
Best Months to Visit Colombo
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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.