AI-generatedKalutara at a glance
- Best time
- Jan – Mar
- Warmest month
- Apr · 32°
- Warmest sea
- Apr · 29.8°
- Sunshine a year
- 2,030 h
- Rain a year
- 2,795 mm
- Climate
- Tropical
- Time zone
- UTC+5:30
- Elevation
- 7 m
Climate in Kalutara
Kalutara has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. April is the warmest month with average highs of 32 °C, while July is the coolest at 30 °C. With around 2,030 hours of sunshine a year, Kalutara is moderately sunny; March is the sunniest month with 7.3 hours a day.
Holiday weather through the year
Best time to visit Kalutara
The best time to visit Kalutara is from January to March. For a beach holiday – sea from 21 °C, warm and mostly dry – go from January to February. The rainy season is in May and from October to November; the wettest month is November with 384 mm.
Kalutara through the seasons
How the weather changes over the seasons, with averages for each.
Kalutara in the dry season
Jun – Sep, Dec – Apr
Good
- 30–32 °C by day
- Sea 28 °C
- 5.9 h of sun a day
- 202 rainy days in all
Kalutara in the rainy season
May, Oct – Nov
Good
- 30–31 °C by day
- Sea 29 °C
- 4.6 h of sun a day
- 82 rainy days in all
Which month for what?
Beach & swimming
Jan – Feb
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Rainy months
May, Oct – Nov
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Kalutara for you.
Your best months: January – February, July
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Good
Best time to visit: January – March
Where to go in OctoberSea temperature in October
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 27°
- Midday, 13:00: about 30°
- Afternoon, 16:00: about 29°
- Evening, 20:00: about 27°
- Night, 23:00: about 26°
05:5617:55
Warm enough for a T-shirt in the evening.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 05:43–06:24 · evening 17:28–18:08
- Blue hour
- Morning 05:35–05:43 · evening 18:08–18:16
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Kalutara compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs stay at about 30° from start to end.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 30° | 30° |
| Night-time low | 25° | 24° |
| Sea | 28° | 28° |
| Daylight | 12.1 h | 11.9 h |
What is the weather like in Kalutara in October?
In October, Kalutara is hot: daytime highs average 30 °C, and even at night it stays warm at around 25 °C. The sea averages 28.3 °C – lovely and warm for swimming. Expect around 4.5 hours of sunshine a day. It is the rainy season: rain falls on about 28 days, totalling 367 mm. On about 17 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a good month for a holiday in Kalutara.
More details for October
- Daylight
- 11 h 59 min05:56 – 17:55
- UV index
- 13 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 14 km/haverage daily peakAll months
- Cloud cover
- 83 %on averageAll months
- Hot days
- 17 days30 °C or moreAll months
- Time zone
- UTC+5:30offset from UTC
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %25 %
- Few rainy daysweight 20 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Compare two months in Kalutara
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
February has the better holiday weather in Kalutara: score 84 against 65. In February, days are 1 °C warmer than in October. The sea is about as warm in both months. February has 17 fewer rainy days. The sun shines 3 hours longer a day in February.
| Month | October | February |
|---|---|---|
| Holiday weather score | 65 | 84better |
| Daytime high | 30° | 31° |
| Night-time low | 25° | 24° |
| Sea | 28.3° | 28.3° |
| Sunshine | 4.5 h | 7.2 hbetter |
| Rainy days | 28 | 11better |
| Rainfall | 367 mm | 88 mmbetter |
| Muggy days | 31 | 28better |
Based on the climate averages 1996–2025.
Kalutara month by month
The typical weather for every month at a glance.
81January31° · Sea 28° · 6.7 h
In January, Kalutara is hot: daytime highs average 31 °C, and even at night it stays warm at around 23 °C. The sea averages 27.9 °C – lovely and warm for swimming. The sun shines for around 6.7 hours a day. Rain is frequent, with about 12 rainy days and 104 mm in total. On about 24 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, January is an excellent month for a holiday in Kalutara.
Kalutara in January84February31° · Sea 28° · 7.2 h
In February, Kalutara is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sea averages 28.3 °C – lovely and warm for swimming. The sun shines for around 7.2 hours a day. Rain is frequent, with about 11 rainy days and 88 mm in total. On about 22 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, February is an excellent month for a holiday in Kalutara.
Kalutara in February73March31° · Sea 29° · 7.3 h
In March, Kalutara is hot: daytime highs average 31 °C, and even at night it stays warm at around 25 °C. The sea averages 29.2 °C – almost as warm as a bath. The sun shines for around 7.3 hours a day. It rains often – on about 18 days, adding up to 116 mm. On about 28 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, March is a good month for a holiday in Kalutara.
Kalutara in March68April32° · Sea 30° · 6.2 h
In April, Kalutara is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 29.8 °C – almost as warm as a bath. Expect around 6.2 hours of sunshine a day. It rains often – on about 27 days, adding up to 212 mm. On about 28 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, April is a good month for a holiday in Kalutara.
Kalutara in April66May31° · Sea 29° · 5.0 h
In May, Kalutara is hot: daytime highs average 31 °C, and even at night it stays warm at around 26 °C. The sea averages 29.3 °C – almost as warm as a bath. Expect around 5.0 hours of sunshine a day. It is the rainy season: rain falls on about 30 days, totalling 305 mm. On about 27 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, May is a good month for a holiday in Kalutara.
Kalutara in May66June30° · Sea 29° · 4.9 h
In June, Kalutara is hot: daytime highs average 30 °C, and even at night it stays warm at around 26 °C. The sea averages 28.5 °C – lovely and warm for swimming. Expect around 4.9 hours of sunshine a day. It rains often – on about 29 days, adding up to 280 mm. On about 19 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, June is a good month for a holiday in Kalutara.
Kalutara in June67July30° · Sea 28° · 5.2 h
In July, Kalutara is hot: daytime highs average 30 °C, and even at night it stays warm at around 26 °C. The sea averages 27.7 °C – lovely and warm for swimming. Expect around 5.2 hours of sunshine a day. It rains often – on about 29 days, adding up to 231 mm. On about 13 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a good month for a holiday in Kalutara.
Kalutara in July68August30° · Sea 28° · 5.3 h
In August, Kalutara is hot: daytime highs average 30 °C, and even at night it stays warm at around 26 °C. The sea averages 27.6 °C – lovely and warm for swimming. Expect around 5.3 hours of sunshine a day. It rains often – on about 29 days, adding up to 221 mm. On about 12 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a good month for a holiday in Kalutara.
Kalutara in August66September30° · Sea 28° · 4.9 h
In September, Kalutara is hot: daytime highs average 30 °C, and even at night it stays warm at around 25 °C. The sea averages 27.9 °C – lovely and warm for swimming. Expect around 4.9 hours of sunshine a day. It rains often – on about 28 days, adding up to 267 mm. On about 15 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a good month for a holiday in Kalutara.
Kalutara in September65October30° · Sea 28° · 4.5 h
In October, Kalutara is hot: daytime highs average 30 °C, and even at night it stays warm at around 25 °C. The sea averages 28.3 °C – lovely and warm for swimming. Expect around 4.5 hours of sunshine a day. It is the rainy season: rain falls on about 28 days, totalling 367 mm. On about 17 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a good month for a holiday in Kalutara.
Kalutara in October65November30° · Sea 29° · 4.4 h
In November, Kalutara is hot: daytime highs average 30 °C, and even at night it stays warm at around 24 °C. The sea averages 28.6 °C – lovely and warm for swimming. Expect around 4.4 hours of sunshine a day. It is the rainy season: rain falls on about 24 days, totalling 384 mm. On about 20 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, November is a good month for a holiday in Kalutara.
Kalutara in November68December31° · Sea 28° · 5.3 h
In December, Kalutara is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sea averages 28.3 °C – lovely and warm for swimming. Expect around 5.3 hours of sunshine a day. It rains often – on about 19 days, adding up to 220 mm. On about 23 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, December is a good month for a holiday in Kalutara.
Kalutara in DecemberClimate in detail
Year & climate tableWarmest in April: 32°
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Kalutara
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Warm 20–24°
- Hot 24° and more
- muggy month (15+ muggy days)
HotOctober: nights around 25°. Hot nights: air conditioning makes sleeping much easier. Muggy on about 31 days (dew point 18 °C or more).
The coolest nights are in January (23°), the warmest in May (26°). Nights stay tropical all year (20 °C and more), so a room with air conditioning or at least a fan pays off. It is muggy (dew point 18 °C or more) all year, on about 365 days a year.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 81 | 31° | 23° | 27.9° | 6.7 h | 12 | 104 |
| FebruaryFeb | 84 | 31° | 24° | 28.3° | 7.2 h | 11 | 88 |
| MarchMar | 73 | 31° | 25° | 29.2° | 7.3 h | 18 | 116 |
| AprilApr | 68 | 32° | 25° | 29.8° | 6.2 h | 27 | 212 |
| MayMay | 66 | 31° | 26° | 29.3° | 5.0 h | 30 | 305 |
| JuneJun | 66 | 30° | 26° | 28.5° | 4.9 h | 29 | 280 |
| JulyJul | 67 | 30° | 26° | 27.7° | 5.2 h | 29 | 231 |
| AugustAug | 68 | 30° | 26° | 27.6° | 5.3 h | 29 | 221 |
| SeptemberSep | 66 | 30° | 25° | 27.9° | 4.9 h | 28 | 267 |
| OctoberOct | 65 | 30° | 25° | 28.3° | 4.5 h | 28 | 367 |
| NovemberNov | 65 | 30° | 24° | 28.6° | 4.4 h | 24 | 384 |
| DecemberDec | 68 | 31° | 24° | 28.3° | 5.3 h | 19 | 220 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
6.58° N, 79.96° E · 7 m · Asia/Colombo
Sea temperatureUp to 30° in April
Sea temperature in Kalutara
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 27.7 – 28.8 °C
Swimming season: all year
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Kalutara ranges from 27.6 °C in August to 29.8 °C in April. At 20 °C and more, the sea is warm enough for swimming all year round.
The sea temperature varies from year to year: in April, eight out of ten years were between 29.1 and 30.5 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 27.9° | 27.3° | 28.6° | warm |
| FebruaryFeb | 28.3° | 27.8° | 28.9° | warm |
| MarchMar | 29.2° | 28.5° | 29.6° | very warm |
| AprilApr | 29.8° | 29.1° | 30.5° | very warm |
| MayMay | 29.3° | 28.6° | 29.9° | very warm |
| JuneJun | 28.5° | 27.7° | 29.1° | warm |
| JulyJul | 27.7° | 27.0° | 28.4° | warm |
| AugustAug | 27.6° | 26.9° | 28.3° | warm |
| SeptemberSep | 27.9° | 27.5° | 28.3° | warm |
| OctoberOct | 28.3° | 27.7° | 28.8° | warm |
| NovemberNov | 28.6° | 28.0° | 29.1° | warm |
| DecemberDec | 28.3° | 27.9° | 28.9° | warm |
Sunshine2,030 hours a year
Sunshine hours in Kalutara
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 4.5 of 12.0 hours of daylight in Kalutara, 38 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain2,795 mm a year, most in November
Rain in Kalutara: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Kalutara has about 28 rainy days with 367 mm of rain in total.
UV indexUp to 14 in April
UV index in Kalutara
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 13 · extremeAvoid the midday sun; SPF 50+, covering clothes, hat and sunglasses.
The sun is strongest in April (UV 14).
Minutes until sunburn in October
- Very fair skin
- about 10 min
- Fair skin
- about 15 min
- Light brown skin
- about 20 min
- Olive skin
- about 25 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind & cloudsWindiest in July: 18 km/h
Wind and clouds in Kalutara
How breezy and how cloudy Kalutara is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Kalutara typically peaks at 14 km/h during the day: Beaufort 3, gentle breeze.
Breezy months for windsurfing and kiting
The daily breeze rarely reaches Beaufort 4 (20 km/h), so wind sports depend on single windy days.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 83 % of the sky over Kalutara: mostly overcast, with about 4.5 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat & humidity249 days of 30° or more a year
Heat and humidity in Kalutara
How often the day gets hot in Kalutara (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Kalutara has about 17 hot days, with an average daytime high of 30 °C: hot and muggy. Plan outdoor activities for the morning and evening, drink a lot and take breaks in the cool.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Planning a trip to Kalutara
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Kalutara in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Kalutara has its best school-holiday weather during the Christmas holidays (score 75) and its weakest during October half-term (score 65).
- 70
Easter holidays
Mar – Apr
Good
- 32 °C by day
- Sea 30 °C
- 6.5 h of sun a day
- 24 rainy days a month
- 66
May half-term
May – Jun
Good
- 31 °C by day
- Sea 29 °C
- 5.0 h of sun a day
- 30 rainy days a month
Keep in mind: Frequent rain
- 68
Summer holidays
Jul – Aug
Good
- 30 °C by day
- Sea 28 °C
- 5.3 h of sun a day
- 29 rainy days a month
- 65
October half-term
Oct
Good
- 30 °C by day
- Sea 28 °C
- 4.5 h of sun a day
- 28 rainy days a month
Keep in mind: Frequent rain
- 75
Christmas holidays
Dec – Jan
GoodBest holidays
- 31 °C by day
- Sea 28 °C
- 6.0 h of sun a day
- 16 rainy days a month
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 11 h 5 min
- Distance
- 8,770 km
- Time zone
- UTC+5:30
- Jet lag
- About 5 days (5 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Good to know: Sri Lanka
- Currency
- Sri Lankan Rupee (LKR)
- Languages
- Sinhala, Tamil
- Sockets
- Type D, G, M · 230 V
- Traffic
- Drives on the left
- Dialling code
- +94
UK plugs fit
Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.
Compare & alternatives
Compare with another place
Kalutara compared
Put Kalutara side by side with another destination.
Kalutara vs Bentota
In October the holiday weather in Kalutara and Bentota is about equally good (score 65 vs 65). During the day it is about as warm in Bentota as in Kalutara. The sea is about equally warm.
| in October | Kalutara | Bentota |
|---|---|---|
| Holiday weather score | 65 | 65 |
| Daytime high | 30° | 30° |
| Sea | 28° | 28° |
| Sunshine | 5 h | 5 h |
| Rainy days | 28 | 28 |
| Best time | Jan – Mar | Jan – Mar |
Through the year
Best places in the country
Sri Lanka in October: the best places
In October, Kalutara ranks 7 of 22 destinations in this country.
- Galle30°28°69
- 2Mirissa30°28°69
- 3Matara30°28°69
- 4Hambantota31°28°69
- 5Negombo31°28°66
- 6Batticaloa32°29°66
- 7KalutaraThis page30°28°65
- 8Bentota30°28°65
Places nearby4 places within 66 km
Near Kalutara
Other destinations close by.
Places with a similar climatee.g. Turbo and Sihanoukville
Places with a climate like Kalutara
Destinations whose weather through the year is closest to Kalutara's – good alternatives.
Frequently asked questions about Kalutara
When is the best time to visit Kalutara?
The best time to visit Kalutara is from January to March. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Kalutara?
The sea temperature in Kalutara ranges from 27.6 °C in August to 29.8 °C in April. At 20 °C and more, the sea is warm enough for swimming all year round.
Can you swim in Kalutara in October?
Yes. In October the sea averages 28.3 °C – lovely and warm for swimming.
What is the warmest month in Kalutara?
April is the warmest month, with average highs of 32 °C and nights around 25 °C. July is the coolest month at 30 °C.
When does it rain most in Kalutara?
The rainy season is in May and from October to November; the wettest month is November with 384 mm. The driest month is February with 88 mm.
How many hours of sunshine does Kalutara get?
Kalutara gets around 2,030 hours of sunshine a year. The sunniest month is March with 7.3 hours a day; in November there are 4.4 hours a day.
What time zone is Kalutara in?
Kalutara is on UTC+5:30 all year.
How long is the flight from London to Kalutara?
A nonstop flight from London to Kalutara takes about 11 h 5 min, for a straight-line distance of about 8,770 km.
Which school holidays are best for Kalutara?
Kalutara has its best school-holiday weather during the Christmas holidays (score 75) and its weakest during October half-term (score 65). Holiday ratings (0–100): Easter holidays 70, May half-term 66, summer holidays 68, October half-term 65, Christmas holidays 75.