Last updated: August 21, 2025
In Kollam, India, May emerges as a month marked by warm temperatures and high humidity, with maximums reaching 32°C (90°F) and an average of 28°C (83°F). The weather is characterized by frequent rainfall, accumulating a significant 355 mm (14.0 in) over the month, resulting in approximately 29 rain-soaked days. With an average humidity level of 77%, the atmosphere feels warm and tropical, making it essential for residents and visitors to be prepared for both the heat and the monsoon rains.
In May, Kollam experiences warm and humid conditions that are characteristic of the pre-monsoon season. With minimum temperatures hovering around 25°C (78°F) and maximums reaching up to 32°C (90°F), the month offers an average temperature of 28°C (83°F), making it comfortably warm yet somewhat sticky. Compared to the preceding months, temperatures remain steady, with May mirroring April's warmth but slightly less in overall humidity as the region anticipates the impending monsoon. As the month progresses, the lush landscapes of Kollam begin to thrive under the increasing heat, setting the stage for the refreshing rains that follow in June.
In May, Kollam experiences a significant surge in precipitation, with 355 mm (14.0 in) of rain falling over 29 days. This marks a notable increase from the previous months, particularly when compared to April's 148 mm (5.8 in), signaling the arrival of the monsoon season. The transition into May not only brings about a dramatic uptick in rainfall, but also transforms the landscape, nurturing lush greenery and vibrant ecosystems. Following May, the pattern continues with even higher levels of precipitation expected in June, underscoring the region's shift towards its wettest months of the year. This trend reveals that May acts as a key precursor to the heavier rains that characterize the tropical climate of Kollam, making it an essential month for both agriculture and the local environment.
May marks a significant shift in humidity levels in Kollam, India, with the figures climbing to 77%, signaling the onset of the monsoon season. This month showcases a noticeable increase from 71% in April, reflecting the tropical climate's transition into its more humid phase. As temperatures swell, the air becomes richer with moisture, heralding the arrival of the rainy season. Following May, the humidity continues its upward trend, peaking in the summer months, with June reaching 83% and July escalating to 86%. This pattern highlights the consistent warmth and moisture that characterize Kollam's climate, creating a lush environment but also an increasing discomfort for those unaccustomed to such humidity.
As the summer sun intensifies in Kollam, India, the UV Index for May settles at a striking 13, maintaining the extreme exposure category seen throughout the preceding months. Although slightly lower than April's peak of 14, the consistent readings underline a significant trend: prolonged, intense sun exposure remains a critical concern. With a burn time of just 10 minutes, residents and visitors alike must prioritize sun safety to avoid harmful effects. This pattern is a reminder that the UV Index remains consistently high as the region transitions into the warmer months, making it essential to stay vigilant. For more details on the UV index variations throughout the year, check Kollam UV Index.
UV Risk Categories
As the vibrant month of May unfolds in Kollam, India, residents enjoy 297 hours of glorious sunshine, a pleasant contrast to the bright days of March and April that boasted even higher totals of 338 and 325 hours, respectively. The gradual dip in sunlight from the previous months signals the transition into the monsoon season. However, the warm, sunlit days of May still offer a delightful ambiance, cleverly balancing the onset of rain that will soon bathe the region. Overall, the sun's presence in Kollam fluctuates throughout the year, peaking in spring and gradually decreasing into the later months, creating a rhythmic dance of light and shadow that defines this coastal paradise.
In Kollam, India, the likelihood of enjoying sunny weather in May takes a notable dip, with only a 16% chance of clear skies. This trend marks a significant decline from the previous months, particularly from the sunnier February and March, which boast probabilities of 69% and 62%, respectively. As the region transitions from the relatively modest sunshine in April at 38%, May ushers in a period characterized by increased cloud cover and the anticipation of the monsoon. Following May, both June and July maintain this subdued chance of sunshine, mirroring May’s statistics, leaving the sun-seekers eager for the clearer days of December, which sees a promising 66% chance.
In Kollam, India, the daylight duration showcases a steady pattern throughout the year. From January to February, the days maintain a consistent length of 11 hours, perfect for those who enjoy shorter daylight. As March arrives, daylight gently increases to 12 hours, a trend that continues through the warm months of April and May. Notably, this 12-hour duration persists from May all the way through September, providing a delightful balance of light for outdoor activities and cultural festivities. As the year transitions into October, daylight begins its gradual retreat once more to 11 hours, marking the start of a cycle that sees shorter days re-emerging by November and December. This rhythm in daylight not only highlights Kollam's tropical charm but also enriches the local lifestyle throughout the year.
In Kollam, India, the winds begin to pick up in May, reaching an average speed of 3.1 m/s (7 mph), a noticeable increase from the preceding months. This trend marks a transition into a breezier season, as the warm weather encourages a refreshing gust that continues to strengthen into the following months. As summer progresses, wind speeds escalate, peaking at 4.9 m/s (11 mph) in July. This gradual increase highlights a seasonal shift, inviting both locals and visitors to enjoy the invigorating atmosphere that the coastal city offers as it braves the monsoon season. The consistent uptick in wind speeds not only promises a delightful respite from the heat but also sets the stage for the vibrant ecosystem that thrives along Kollam's breathtaking shores.
Weather in Kollam varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Kollam, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparison to January, May is noticeably warmer and much wetter. While January typically sees average temperatures ranging from a comfortable 24°C (75°F) at night to a maximum of 31°C (88°F) during the day, May heats up slightly with temperatures reaching a minimum of 25°C (78°F) and a peak of 32°C (90°F). However, May brings significantly more rainfall, accumulating 355 mm (14.0 in) over 29 days, in stark contrast to January's modest 40 mm (1.6 in) across just 7 days. Additionally, May tends to have higher humidity levels, averaging 77%, compared to January's 70%. For more details on the weather in January, you can check this link: Kollam weather in January.
May and February showcase striking similarities in temperature, with both months recording a minimum of 25°C (78°F), an average of 28°C (83°F), and a maximum of 32°C (90°F). However, they differ significantly in terms of precipitation and humidity. May experiences a substantial amount of rainfall, with 355 mm (14.0 in) occurring over 29 days, leading to a humidity level of 77%. In contrast, February is notably drier, receiving just 17 mm (0.7 in) of rain over 5 days, resulting in a lower humidity of 64%. This stark difference makes February a more pleasant month for outdoor activities, while May's high humidity and rainfall may encourage more indoor pursuits. For more information on February weather, you can visit Kollam weather in February.
In comparing the weather of March and May, both months experience similar temperature ranges, with March having an average maximum of 32°C (90°F) and May matching that figure. However, March tends to be slightly cooler on average at 29°C (84°F) compared to May's 28°C (83°F). One of the most significant differences lies in precipitation, with May receiving a substantial 355 mm (14.0 in) over 29 days, while March sees much less, with only 80 mm (3.1 in) spread across 18 days. Additionally, humidity levels are higher in May at 77%, compared to March's 66%, making May feel much more humid overall. For a closer look at March's weather specifics, you can visit Kollam weather in March.
In comparison to April, May presents a similar temperature profile, with both months featuring minimum temperatures of 25°C (77°F) and maximums reaching 32°C (90°F). However, May tends to be slightly warmer on average at 28°C (83°F) compared to April's average of 29°C (84°F). A notable difference lies in precipitation; May sees significantly higher rainfall at 355 mm (14.0 in) over 29 days, while April experiences just 148 mm (5.8 in) over 27 days. Additionally, May has a higher humidity level at 77%, compared to April’s 71%. For more details, you can check Kollam weather in April.
May and June in Kollam exhibit similar warm temperatures but differ in precipitation levels and humidity. In May, temperatures range from a minimum of 25°C (78°F) to a maximum of 32°C (90°F), with an average of 28°C (83°F). The month experiences significant rainfall, accumulating 355 mm (14.0 in) over 29 days, leading to a humidity level of 77%. In contrast, June sees slightly cooler temperatures, with a minimum of 25°C (77°F), an average of 27°C (81°F), and a maximum of 30°C (87°F). However, it also witnesses increased rainfall, totaling 404 mm (15.9 in) across 30 days, while humidity rises to 83%. For more detailed information, visit Kollam weather in June.
In comparing the weather of May and July, both months exhibit warm temperatures, with May having slightly higher averages. In May, temperatures range from a minimum of 25°C (78°F) to a maximum of 32°C (90°F), while July showcases a narrower range, with highs reaching 30°C (86°F) and average temperatures around 27°C (80°F). Precipitation is prominent in both months, with May receiving 355 mm (14.0 in) over 29 days, compared to July's 307 mm (12.1 in) across 30 days. Additionally, humidity levels are higher in July, peaking at 86% compared to May's 77%. For more details, you can check Kollam weather in July.
In May, the weather is typically warmer, with minimum temperatures reaching 25°C (78°F) and averaging around 28°C (83°F), peaking at 32°C (90°F). While May experiences substantial rainfall of 355 mm (14.0 in) over 29 days, the humidity remains relatively lower at 77%. In contrast, August sees slightly cooler temperatures, with a minimum of 24°C (76°F) and an average of 27°C (80°F), maxing out at 29°C (85°F). Rainfall increases to 365 mm (14.4 in) over the same number of days, with humidity rising to 87%. For a more detailed perspective on the weather in August, you can visit Kollam weather in August.
In May, the weather tends to be warmer, with average temperatures ranging from a minimum of 25°C (78°F) to a maximum of 32°C (90°F), and an overall average of 28°C (83°F). However, this month also sees substantial rainfall, with 355 mm (14.0 in) of precipitation over 29 days and a humidity level of 77%. In contrast, September offers slightly cooler temperatures, averaging 27°C (81°F), with a max of 30°C (86°F) and similar minimums as May. Precipitation in September is reduced to 254 mm (10.0 in) spread over 27 days, but the humidity increases to 85%, creating a muggy atmosphere. For more details about the weather in September, you can visit Kollam weather in September.
May and October both feature warm temperatures, with May experiencing slightly higher averages, including a maximum of 32°C (90°F) compared to October's maximum of 30°C (86°F). While the minimum temperature is consistent at 25°C (77°F) for both months, the overall average in May is marginally warmer at 28°C (83°F) versus October's 27°C (81°F). Precipitation is more abundant in May, with 355 mm (14.0 in) occurring over 29 days, compared to October's 267 mm (10.5 in) under the same number of days. Humidity is slightly higher in October at 84%, compared to May's 77%. For more detailed insights, you can check Kollam weather in October.
May and November exhibit similar temperature profiles, with both months experiencing minimum temperatures around 25-24°C (76-78°F) and maximum temperatures peaking at 32°C (90°F). However, May is considerably wetter, with an average precipitation of 355 mm (14.0 in) spread over 29 days, compared to November's 207 mm (8.2 in) over just 23 days. Additionally, humidity levels are slightly higher in November at 83%, compared to 77% in May. For a deeper dive into November weather specifics in Kollam, you can refer to Kollam weather in November.
May and December in Kollam present distinct weather patterns despite their similar average temperatures. In May, the average temperature ranges from a minimum of 25°C (78°F) to a maximum of 32°C (90°F), accompanied by significant rainfall at 355 mm (14.0 in) over 29 days, resulting in high humidity levels of 77%. In contrast, December experiences slightly cooler temperatures, with a minimum of 24°C (76°F) and a maximum of 32°C (89°F), along with markedly less rainfall totaling 82 mm (3.2 in) over just 10 days, while humidity increases slightly to 80%. For a more detailed look at December weather, check Kollam weather in December.
As May unfolds in Kollam, the weather transforms into a mosaic of warmth and humidity, distinguishing it from the milder months preceding it. With average temperatures hovering around 28°C (83°F) and a peak of 32°C (90°F), the heat becomes more palpable, while the humidity climbs to a notable 77%. The month is characterized by ample rainfall, with 355 mm (14.0 in) of precipitation spread across nearly 29 days. This combination of warmth and frequent showers creates a lush, vibrant environment, setting the stage for the impending monsoon. For a deeper understanding of how this weather pattern fits into the broader climate of the area, explore Kollam Climate.