Peak in April
Coolest in September
Heavy in June
Peak in dry season
Sea Temperature
Indian Ocean
Annual Average
Perfect for swimming and water sports
Based on average sea surface temperature
Colombo coastline
Colombo Monthly Weather Guide
Click any month to explore daily weather forecasts
January
February
March
April
May
June
July
August
September
October
November
December
Essential Travel Info for Colombo
Currency
LKR
Rs රු Sri Lankan rupee
Language
Sinhala
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Driving
Left side
Connect
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Safety
Moderate Safety
GPI: 2.02
Best Time to Visit Colombo
Location, climate overview & historical trends
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📍 6.9270° N, 79.8610° E
Open in Google MapsColombo is a prominent destination in Sri Lanka.
Located at 6.93°N latitude,Colombo experiences a tropical climate with warm temperatures year-round.
Based on 30 years of data, April is the warmest month (avg. 31°C), while September is the coolest. June sees the most rain (86% chance), making February the driest month.
Historical Climate Trend
30-Year Analysis+0.09°C
Total over 30 years
+0.03°C
Per decade
Linear regression analysis of historical maximum temperatures for Colombo, based on 1995-2024 satellite data from NASA POWER.
Best Time to Visit
NASA POWER Data (1991-2021)January
Best months to visit
30°C
Avg High
Based on 30 years of NASA satellite data,Colombo receives approximately 2,134mm of rainfall annually. These months offer optimal temperatures and minimal rain probability for your visit.
Climate Trends
EXCLUSIVE1995-2040 Temperature Trend
1995 Avg
29.6°
2024 Avg
29.5°
2040 Proj
29.9°
+0.03°C
per decade (observed)
+0.23°C
per decade (CMIP6)
🌡️ Colombo has warmed by +0.1°C since 1995. By 2040, an additional +0.4°C is projected (based on CMIP6 rate of 0.228°C/decade), for a total of +0.5°C from 1995 baseline.
NASA POWER (1995-2024) + CMIP6 (CMCC_CM2_VHR4, EC_Earth3P_HR, FGOALS_f3_H, HiRAM_SIT_HR, MRI_AGCM3_2_S, NICAM16_8S)
Travel Intelligence
Exclusive flight analytics & health data for Colombo
Smart Flight Estimator
Airport-to-Airport Logistics
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Flight Connectivity Analysis
Airport traffic data & seasonal patterns
Quieter airport
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slots per day
Peak
Jan
Low
Oct
Monthly Traffic Distribution
Key Connections
Health & Safety Advisory
CDC travel health recommendations
COVID-19
All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.
Chikungunya
There is anoutbreak of chikungunyain Sri Lanka.Chikungunya vaccinationis recommended for people traveling to an area with a chikungunya outbreak.
Hepatitis A
Recommended for unvaccinated travelers one year old or older going to Sri Lanka.Infants 6 to 11 months old should also be vaccinated against Hepatitis A. The dose does not count toward the routine 2-dose series.Travelers allergic to a vaccine component should receive a single dose of immune globulin, which provides effective protection for up to 2 months depending on dosage given.Unvaccinated travelers who are over 40 years old, are immunocompromised, or have chronic medical conditions planning to depart to a risk area in less than 2 weeks should get the initial dose of vaccine and at the same appointment receive immune globulin.
Hepatitis B
Recommended for unvaccinated travelers younger than 60 years old traveling to Sri Lanka. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Sri Lanka.
Japanese Encephalitis
Recommended for travelers whoAre moving to an area with Japanese encephalitis to liveSpend long periods of time, such as a month or more, in areas with Japanese encephalitisFrequently travel to areas with Japanese encephalitisConsider vaccination for travelersSpending less than a month in areas with Japanese encephalitis but will be doing activities that increase risk of infection, such as visiting rural areas, hiking or camping, or staying in places without air conditioning, screens, or bed netsGoing to areas with Japanese encephalitis who are uncertain of their activities or how long they will be thereNot recommended for travelers planning short-term travel to urban areas or travel to areas with no clear Japanese encephalitis season.
Measles
Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.
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Source: CDC Travelers' Health
View Complete Health GuideColombo Climate Data by Month
Historical temperature and precipitation averages
| Month | Avg High (°C) | Rain Probability (%) | Status |
|---|---|---|---|
| January | 30°C | 26% | 😊 Pleasant |
| February | 31°C | 21% | 🔥 Hot |
| March | 31°C | 31% | 🔥 Hot |
| April | 31°C | 60% | 🌧️ Rainy |
| May | 30°C | 81% | 🌧️ Rainy |
| June | 29°C | 86% | 🌧️ Rainy |
| July | 29°C | 74% | 🌧️ Rainy |
| August | 28°C | 71% | 🌧️ Rainy |
| September | 28°C | 77% | 🌧️ Rainy |
| October | 29°C | 76% | 🌧️ Rainy |
| November | 29°C | 70% | 🌧️ Rainy |
| December | 29°C | 44% | 🌧️ Rainy |
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Explore climate data for popular destinations within easy reach
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Compare weather conditions with nearby destinations for your trip planning
Compare Colombo Weather vs Popular Destinations
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These destinations share similar weather patterns with Colombo. Perfect alternatives if you're looking for the same climate in a different location.
Colombo Weather FAQ
When is the best time to visit Colombo?
Honestly, look for months with mild temperatures (20°C-25°C) and low rain chance. Based on historical data, January are usually great choices.
When is the hottest month in Colombo?
April is historically the hottest month in Colombo with average highs of 31°C.
When does it rain the most in Colombo?
June typically sees the highest probability of rain (86%).
Is Colombo expensive?
Prices vary by season. The "Perfect" weather months usually coincide with peak tourist season and higher prices, while the rainy or cold months offer better deals.