Climate and monthly weather forecastWaikkal, Sri Lanka

Climate and monthly weather forecast
The climate of Waikkal
Situated under the Köppen climate classification of Af, Waikkal, Sri Lanka experiences a tropical rainforest climate, making it a destination with consistently high temperatures and significant rainfall throughout the year. Geographically positioned near the equator, the town is exposed to a high level of solar radiation, leading to the region's typically high temperatures.The town's average temperatures range between 22°C (71.6°F) to 33°C (91.4°F), providing a warm and tropical environment all year round. The highest temperatures tend to occur between March and May, reaching up to 33°C (91.4°F), while the cooler months of November to February register lower averages from 22°C (71.6°F) to 31°C (87.8°F).
Rainfall in Waikkal varies quite substantially, with the maximum average monthly rainfall of 351mm (13.82") recorded in October, and a minimum average of 47mm (1.85") in January. Generally, the town witnesses a higher number of rainy days from September to November, averaging from 12 to 15 days. On the other hand, January and February experience significantly fewer rainy days, with an average of 4 days per month.
Daylight hours fluctuate slightly throughout the year, from a minimum of 11.7 hours in January to a maximum of 12.5 hours from May to July. Correspondingly, the UV index is at its highest, rated 12, from February to September dropping to 11 in the cooler months. Sea temperature remains relatively constant at around 27°C (80.6°F) to 30°C (86°F) across the year, providing favourable conditions for marine activities throughout the period.
The best time to visit Waikkal
For those seeking to bask in the tropical warmth, the ideal time to visit Waikkal is between the months of January and March. Temperatures during this period average between 22°C (71.6°F) to 33°C (91.4°F), offering an excellent balance of warmth and comfort. Besides, these are the months with the least rainfall, averaging 47mm (1.85") to 71mm (2.8") per month, ensuring that visitors can optimally enjoy outdoor activities with minimal disruptions.The worst time to visit Waikkal
Visitors looking to avoid heavy rains and stronger winds would do well to steer clear of the period from September to November. This period records heavy rainfall, from 187mm (7.36") in September increasing to 351mm (13.82") in October. It also has the highest number of rainy days, averaging around 15 days per month. The sharp increase in rainfall, coupled with a high UV index of 12, could make outdoor activities problematic.Spring weather in Waikkal
The spring months of March to May witness a rise in temperature, reaching up to 33°C (91.4°F). This period also sees an increase in rainfall, climbing from 71mm (2.8") in February to 244mm (9.61") in April. Daylight hours are more extended and peak during this time, registering up to 12.3 hours of daylight. The UV index is at its highest during spring, rated 12, reinforcing the need for sun protection.Summer weather in Waikkal
Summer in Waikkal, from June to August, offers a mix of high temperatures and notable rainfall. Temperatures remain steady from 31°C (87.8°F) to 32°C (89.6°F), typical of a tropical rainforest climate. Correspondingly, the average rainfall in these months ranges from 87mm (3.43") to 154mm (6.06"), ensuring a lush and vibrant landscape.Autumn weather in Waikkal
Autumn, ushered in September, comes with heavier rainfall compared to the previous months. By October, the downpour considerably increases, registering an average monthly rainfall of 351mm (13.82"), along with approximately 15 days of rainfall. Despite this, the temperatures only mildly decrease from 31°C (87.8°F) to 30°C (86°F).Winter weather in Waikkal
With the arrival of winter (November to February), Waikkal experiences a slight dip in temperature, varying between 22°C (71.6°F) to 31°C (87.8°F). Rainfall moderately reduces, from 294mm (11.57") in November to 47mm (1.85") by January, making it the driest month in terms of rainfall. However, the average number of rainy days remains high, oscillating between 10 to 15 days per month, and the UV index drops to 11.Weather in January
With the start of the new year, Waikkal gets its fair share of rainfall. The sea temperature holds steady, providing a relaxing retreat for visitors. Sunlight is abundant, making the city an excellent destination for sun-seekers and outdoor enthusiasts. Weather in January »Weather in February
A slight increase in rainfall patterns paints a picture of February's weather landscape in Waikkal. Sunlight abundance remains steady, favoring outdoor activities. The sea temperatures continue their comfortable spell from the previous month, welcoming beach lovers. Weather in February »Weather in March
March heralds in a wet season in Waikkal, Sri Lanka. A surge in rainfall changes the weather narrative, with an escalation in humidity levels. Despite this, temperatures remain relatively steady, with plenty of sunshine hours to enjoy a host of outdoor activities. Weather in March »Weather in April
Rain and temperatures continue to climb in April, making it a bustling time for the city. Plenty of sunshine couples with warm sea temperatures, offering conditions perfect for swimming. Sunny days are complemented by cooler nights, ensuring a comfortable overall atmosphere. Weather in April »Weather in May
May continues the trend of increased rainfall and maintains the balmy conditions of April. Time by the sea is favorable, with swimming conditions remaining warm and inviting. Though precipitation is a defining feature, the ample sunlight persists, paving the way for a variety of outdoor activities. Weather in May »Weather in June
The months of June bring a decline in rainfall, starting to alleviate the wet conditions from the previous month. Temperatures stay consistent with the past months, offering warm seas and plenty of sunlight hours. June still marks the tail-end of the wet season, yet the slightly decreased rainfall hints at the upcoming drier period. Weather in June »Weather in July
In July, the weather begins its transition from the wet to the dry season. Temperatures stabilize, and sunshine is plentiful, kindly catering to those in pursuit of outdoor activities. Sea temperatures mirror the steady consistency of those on land, providing pleasant swimming conditions. Weather in July »Weather in August
August holds the promise of good weather, with a further decrease in rainfall. Temperatures on land and sea retain their friendly warmth, adding to the inviting atmosphere of the city. As high levels of sunshine continue to grace the region, outdoor activities remain favoured. Weather in August »Weather in September
The fluctuations of the wet season make a visible retreat during September. Warm temperatures persist, favouring a host of water activities. Despite the high amounts of sunshine, the rainfall picks up from August's lower rates. Weather in September »Weather in October
As October steps into the frame, the weather takes another turn towards a wetter spell. Temperatures remain warm, both on land and sea, ensuring comfortable conditions for tourists. Despite being a month relatively high in rainfall, considering the preceding and following month, the hours of sunlight remain abundant. Weather in October »Weather in November
The month of November maintains the pattern from October, keeping the rains as a constant feature of the weather. Despite the precipitation, days are bathed in sunshine, and the warm sea offers a respite. Similarly to the previous month, the rainfall is plentiful, with an average of 294mm (11.57"). Weather in November »Weather in December
December rings in the final changes in Waikkal's weather cycle for the year. The amount of rainfall begins to ease, heading towards a drier season ahead. Owing to the persistent warmth of the sea and the generous hours of sunlight, outdoor activities continue to flourish. Weather in December »Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Waikkal, Sri Lanka
The warmest months (with the highest average high temperature) are March and April (33°C).
The month with the lowest average high temperature is December (30°C).
The months with the highest average low temperature are May, June, July, August and September (25°C).
The coldest months (with the lowest average low temperature) are January, February and December (22°C).
Average rainfall
Waikkal, Sri Lanka
- Average rainfall in January:
47mm - Average rainfall in February:
71mm - Average rainfall in March:
128mm - Average rainfall in April:
244mm - Average rainfall in May:
298mm - Average rainfall in June:
154mm
- Average rainfall in July:
103mm - Average rainfall in August:
87mm - Average rainfall in September:
187mm - Average rainfall in October:
351mm - Average rainfall in November:
294mm - Average rainfall in December:
153mm
The wettest month (with the highest rainfall) is October (351mm).
The driest month (with the least rainfall) is January (47mm).
Average rainfall days
Waikkal, Sri Lanka
- Average rainfall days in January:
4 days - Average rainfall days in February:
4 days - Average rainfall days in March:
8 days - Average rainfall days in April:
13 days - Average rainfall days in May:
12 days - Average rainfall days in June:
13 days
- Average rainfall days in July:
10 days - Average rainfall days in August:
9 days - Average rainfall days in September:
12 days - Average rainfall days in October:
15 days - Average rainfall days in November:
15 days - Average rainfall days in December:
10 days
The months with the highest number of rainy days are October and November (15 days).
The months with the least rainy days are January and February (4 days).
Average sea temperature
Waikkal, Sri Lanka
The best month for swimming (with the highest average sea temperature) is April (30°C).
The coldest months (with the lowest average sea temperature) are January, July, August and September (27°C).
Average daylight / Average sunshine
Waikkal, Sri Lanka
- Average daylight in January:
11h and 48min - Average daylight in February:
11h and 54min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 18min - Average daylight in May:
12h and 30min - Average daylight in June:
12h and 30min
- Average daylight in July:
12h and 30min - Average daylight in August:
12h and 24min - Average daylight in September:
12h and 12min - Average daylight in October:
12h and 0min - Average daylight in November:
11h and 48min - Average daylight in December:
11h and 42min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).
The month with the most sunshine is March (Average sunshine: 9h).
The months with the least sunshine are June, July, August, September and October (Average sunshine: 6h).
Average UV index
Waikkal, Sri Lanka
The months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The months with the lowest UV index are January, November and December (UV index 11).








