July Weather in Colombo, Sri Lanka

Last updated: March 19, 2025

In July, Colombo, Sri Lanka experiences a warm tropical climate characterized by an average temperature of 28°C (82°F), peaking at a maximum of 30°C (87°F) and dipping to a comfortable minimum of 25°C (77°F). The month is marked by considerable rainfall, with 168 mm (6.6 in) and precipitation occurring on 26 days, making it one of the wetter months of the year. Humidity levels soar to around 82%, creating a vibrant, lush atmosphere typical of the region’s monsoon season. Visitors can expect a blend of sunny moments interspersed with refreshing rain, making it an intriguing time to explore this coastal city.

July Temperature in Colombo

In July, Colombo experiences a tropical climate, with temperatures showcasing a slight dip compared to the preceding months. The minimum temperature hovers around 25°C (77°F), while the average remains comfortably at 28°C (82°F). Although the maximum temperature reaches 30°C (87°F), it's notably cooler than the peak heat recorded earlier in the year. This pattern of mild highs and consistent averages hints at a more temperate phase, making July an ideal time for exploring the vibrant city and its stunning coastal scenery. The warmth, coupled with occasional breezes, invites both locals and travelers to enjoy outdoor activities amidst the lush surroundings.

July Weather in Colombo: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Colombo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec818283838382828181818181
Data source: Temperature data for Colombo generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Colombo

In July, Colombo, Sri Lanka experiences a notable shift in its monsoon patterns, recording an average precipitation of 168 mm (6.6 in) over 26 days. This marks a decrease from the previous months, yet it remains substantial compared to earlier in the year. Following the peak rainfall in May with 295 mm, July's rainfall is characteristic of the mid-monsoon period, providing a necessary respite as it transitions into a wetter August. Despite fewer rainy days compared to June, the consistent precipitation showcases the region’s tropical climate, where humidity lingers and lush greenery thrives. This monthly rhythm of rain underscores Colombo's dependence on monsoonal cycles, highlighting both the challenges and beauty of its climate.

July Precipitation Trends in Colombo

The chart displays monthly precipitation patterns in Colombo, with values for each month alongside July's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec5454118126295257168189234347294179
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

July Humidity in Colombo

In July, Colombo, Sri Lanka experiences a notable consistency in humidity, maintaining a level of 82%, which aligns with the slightly elevated conditions seen in June. This increase marks the onset of the region's peak humidity, typically peaking further in August at 83%. A closer look at the data reveals a gradual rise from 73% in February to a high of 82% in both July and September, highlighting a trend of escalating moisture levels as the year progresses. Throughout the latter half of the year, humidity remains stable, hovering around 80% to 82%, making the tropical climate of Colombo feel particularly lush and vibrant during this time.

July Average Humidity in Colombo

This chart illustrates the average monthly humidity levels in Colombo, with July's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how July's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec77%73%74%74%76%82%82%83%82%81%80%80%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Colombo

In July, the UV Index in Colombo, Sri Lanka remains consistent at 13, categorizing the exposure level as extreme. This trend is reflective of the previous month, June, which also registered a UV Index of 13. With a burn time of just 10 minutes, it's crucial for residents and visitors alike to take proactive measures against harmful UV rays. Notably, the months leading up to July showed slightly higher UV levels, peaking in April with an index of 15, while August is poised to mirror the current July figures. This pattern indicates that Colombo's UV exposure remains consistently high throughout the year, making sun protection an essential part of daily life. For more detailed information, you can visit the Colombo UV Index.

Maximum UV Index Levels in Colombo for July

The chart shows the monthly maximum UV Index (UVI) for Colombo in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec121414151413131314131110
Data source: Colombo July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

July Sunshine in Colombo

In July, Colombo basks in sunshine for an impressive 333 hours, continuing a consistent trend of abundant sunlight throughout the first half of the year. As the monsoon season approaches, this month stands out as a peak in daylight hours, just shy of the record set in March with 336 hours. While June offers a generous 320 hours of light, the gradual increase through the months reflects the island's warmth and friendliness, making it an ideal time for beach lovers and adventure seekers alike. Following July, light hours gently decline, paving the way for the slightly cooler months ahead, yet the sunshine remains a hallmark of the Sri Lankan experience, as evident from the year-round averages.

Monthly Sunshine Duration in Colombo: July Highlighted

The July sunshine duration represents the total number of hours Colombo experiences direct sunlight during the month of July, excluding cloudy or obstructed periods. This chart compares the sunshine duration of July with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec270h312h336h334h312h320h333h326h304h299h279h312h
Data source: Colombo July Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Colombo During July

In Colombo, Sri Lanka, the likelihood of sunny weather in July dips to a modest 15%, marking one of the cloudier months of the year. This trend becomes even more apparent when looking at the surrounding months, as June sees a slightly higher 21% chance of sunshine, while August plunges further down to just 9%. The overall pattern reflects a significant drop in sunlight during the mid-year, particularly as the region transitions through a wetter monsoon season. Interestingly, the chance of sun starts to rise after July, with February boasting the highest probability at 53%. If you're planning to soak up some rays, it may be wise to consider January or December, where the sun shines much brighter!

Percentage of Sunny Days in July in Colombo

The chart illustrates the percentage of sunny days in Colombo throughout the year, with July highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Colombo experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%53%32%46%17%21%15%9%18%15%14%54%
Data source: Colombo July chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Colombo in July

In Colombo, Sri Lanka, July experiences a consistent 12 hours of daylight, mirroring the trend established in the preceding months. This period of ample daylight reflects a stable climatic pattern, with extended hours of sunshine from March through August. As the year progresses, daylight begins to taper off into the latter months, with 11 hours of daylight returning in both October and December. This rhythm not only highlights Sri Lanka's tropical climate but also sets the stage for vibrant mornings and evenings, allowing residents and visitors alike to fully embrace the beauty of the island throughout the summer.

Average Daylight Hours in Colombo for July

The chart illustrates the variation in daylight duration in Colombo throughout the year, with July highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 45m11h 53m12h 4m12h 15m12h 25m12h 30m12h 27m12h 19m12h 8m11h 57m11h 47m11h 43m
Data source: Colombo daylight hours, calculated by summing the hours between sunrise and sunset for each day.

July Winds in Colombo

In July, the wind in Colombo, Sri Lanka, reaches an invigorating average speed of 5.6 m/s (13 mph), marking it as one of the breezier months of the year. This uptick in wind speed compared to June’s 5.1 m/s (11 mph) suggests a transition into the heart of the wet season, where coastal breezes become notably more pronounced. Interestingly, July also stands out, maintaining higher wind speeds than the preceding months from January to May, which typically hover around the 3.0 to 4.7 m/s (7 to 11 mph) range. As the summer solstice fades, locals and visitors alike can enjoy the refreshing gusts that characterize this vibrant month, providing a pleasant contrast to the tropical warmth.

Average July Wind Speed in Colombo

The chart displays monthly wind speed patterns in Colombo, with values for each month shown alongside July's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how July's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.54.72.33.04.45.15.6 m/s5.34.93.93.83.9
Data source: Colombo July wind data, generated using information from the Copernicus Climate Change Service.

How July Weather in Colombo Compares to Other Months

The weather in Colombo changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of July's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Colombo and find detailed weather information for every month.

In comparing the weather of July and January, July presents a warmer atmosphere with average temperatures around 28°C (82°F) and a maximum of 30°C (87°F), contrasted with January's slightly cooler averages, peaking at 33°C (92°F). Although January has a higher maximum temperature, it enjoys less humidity at 77% compared to July's 82%. Additionally, July experiences significantly more rainfall, receiving 168 mm (6.6 in) over 26 days, while January has a mere 54 mm (2.1 in) spread across just 7 days. For a detailed overview of January weather in Colombo, you can check Colombo weather in January.

In comparing the weather of July and February, notable differences emerge in temperature, precipitation, and humidity. July experiences a minimum temperature of 25°C (77°F) and averages around 28°C (82°F), peaking at 30°C (87°F), while February boasts a minimum of 22°C (73°F) and a maximum reaching 34°C (94°F) with the same average of 28°C (82°F). Precipitation also varies significantly, with July receiving 168 mm (6.6 in) over 26 days, compared to February's much lighter 54 mm (2.1 in) across just 9 days. Additionally, humidity levels are higher in July at 82%, while February has a lower humidity of 73%. For more information on February weather, you can visit Colombo weather in February.

In comparing the weather of July and March, we see notable differences despite their similar average temperatures. July typically experiences a slightly cooler range, with temperatures averaging around 28°C (82°F) and a maximum of 30°C (87°F), while March can reach up to 33°C (92°F). Precipitation is significantly higher in July, with 168 mm (6.6 in) falling over 26 days compared to March's 118 mm (4.6 in) spread over 17 days. Additionally, July's humidity is higher at 82%, compared to March's 74%, which can make July feel more oppressive. For further insights into the climate during March, you can visit Colombo weather in March.

When comparing the weather in July and April, both months exhibit warm temperatures, but they differ in notable ways. In April, temperatures can reach a maximum of 33°C (91°F), making it slightly hotter than July's peak of 30°C (87°F). However, both months have the same average temperature of around 28°C (82°F). April experiences less rainfall, with 125 mm (4.9 in) over 25 days, compared to July's heavier precipitation of 168 mm (6.6 in) across 26 days. Additionally, humidity levels are lower in April at 74%, while July's humidity rises to a steamy 82%, contributing to a more tropical feel. For more detailed insights on April weather, check out Colombo weather in April.

When comparing the weather in July and May, both months exhibit a similar temperature range, with minimums around 25°C (77°F), average temperatures of 28°C (82°F), and maximums reaching up to 30°C (87°F) in July compared to 32°C (90°F) in May. However, May experiences significantly higher rainfall, totaling 295 mm (11.6 in) over 29 days, while July sees 168 mm (6.6 in) over 26 days. Additionally, humidity levels are a bit lower in May at 76%, compared to a more humid 82% in July. For more detailed information, you can check Colombo weather in May.

In comparing the weather of June and July, both months exhibit similar temperature ranges, with June having a slightly higher maximum temperature of 31°C (87°F) compared to July's 30°C (87°F). However, July experiences less precipitation, totaling 168 mm (6.6 in) over 26 days, while June sees a heavier rainfall of 257 mm (10.1 in) across 28 days. Humidity remains consistent at 82% for both months, contributing to the typically muggy conditions. For more details, you can check Colombo weather in June.

In July, temperatures in Colombo typically range from a minimum of 25°C (77°F) to a maximum of 30°C (87°F), with an average temperature of 28°C (82°F). The month experiences significant rainfall, accumulating around 168 mm (6.6 in) over approximately 26 days, coupled with a humidity level of 82%.

In comparison, August's weather is quite similar, with minimum temperatures remaining steady at 25°C (77°F), an average of 27°C (81°F), and a maximum reach of 30°C (85°F). However, August sees an increase in precipitation, totaling 189 mm (7.4 in) over 27 days, and humidity slightly rises to 83%.

For a detailed look at the weather during this month, you can check out Colombo weather in August.

In July, the weather remains warm with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 30°C (87°F) and an average of 28°C (82°F). The month sees significant rainfall, totaling 168 mm (6.6 in) over 26 days, coupled with high humidity at 82%. Conversely, September also features similar warm temperatures, with a minimum of 25°C (77°F), an average of 27°C (81°F), and a maximum of 30°C (86°F). However, the rainfall increases to 234 mm (9.2 in), also spread across 26 days, maintaining the same humidity level of 82%. For a detailed look at September's weather, you can visit Colombo weather in September.

In July, the weather features warm temperatures with a minimum of 25°C (77°F) and an average of 28°C (82°F), peaking at 30°C (87°F). However, it experiences significant rainfall, with 168 mm (6.6 in) over 26 days and a high humidity level of 82%. In comparison, October boasts slightly lower temperatures, with a minimum of 24°C (76°F) and an average of 27°C (81°F), while still reaching up to 30°C (86°F). Nevertheless, October is characterized by even heavier rainfall, totaling 347 mm (13.6 in) across 29 days, and maintains a similar humidity rate of 81%. For more details on October weather, visit Colombo weather in October.

In comparing the weather between July and November, it is notable that both months experience warm temperatures, with July averaging around 28°C (82°F) and November slightly cooler at an average of 27°C (81°F). July has a minimum temperature of 25°C (77°F), while November's minimum is quite close at 24°C (75°F). However, November tends to be wetter, with precipitation reaching 294 mm (11.6 in) compared to July's 168 mm (6.6 in), both experiencing rain on approximately 26 days. Humidity levels are also similar, with July at 82% and November slightly lower at 80%. For more detailed insights, you can check Colombo weather in November.

In July, the weather is characterized by warm temperatures ranging from a minimum of 25°C (77°F) to a maximum of 30°C (87°F), with an average around 28°C (82°F). This month experiences considerable precipitation, with 168 mm (6.6 in) of rain spread over 26 days and an average humidity of 82%. In contrast, December sees slightly warmer conditions, with a minimum of 23°C (73°F) and a maximum of 32°C (89°F), averaging 27°C (81°F). Although December has a similar rainfall total of 179 mm (7.1 in), it has fewer rainy days at 17 and slightly lower humidity at 80%. For more detailed insights, you can check Colombo weather in December.

Compare Colombo's Climate with Cities Worldwide

Conclusion: What to Expect From July Weather in Colombo

As July rolls in, Colombo experiences a shift in its weather patterns, characterized by warmer temperatures and high humidity levels. Compared to other months, July sees considerable rainfall, with frequent precipitation days adding to the tropical atmosphere. The combination of warm temperatures and elevated moisture creates a lush, green environment, inviting travelers to enjoy the vibrant scenery. However, the frequent showers can also impact outdoor plans, urging visitors to be prepared for sudden downpours. Understanding this unique climate can enhance your travel experience, so be sure to check out the detailed breakdown of the Colombo weather at Colombo Climate.