sri lanka rainfall

Rainfall Distributions in Sri Lanka in Time and Space: An ...

Daily rainfall totals are analyzed for the main agro-climatic zones of Sri Lanka for the period 1976–2006. The emphasis is on daily rainfall rather than on longer-period totals, in particular the number of daily falls exceeding given threshold totals. For one station …

Weather in Sri Lanka, live, forecasts and averages ...

Sri Lanka is an island nation in the Indian Ocean about 30kms off the coast of India and home to around 20 million people. The pear-shaped island is about 65,000km² in size and is mountainous in the south central region, with the highest peaks climbing to 2500m above sea level.

Recent rainfall trend over Sri Lanka (1987–2017 ...

2019-11-14 · Rainfall trend analysis provides useful information for effective planning, and management of water resources, and gives an insight into climate change of a region. This study investigates trends in annual and seasonal rainfall over Sri Lanka using an Innovative Trend Analysis (ITA) and Mann–Kendall (MK) test with Sen''s slope estimator.

Climate of Sri Lanka

2021-10-10 · Rainfall. Rainfall in Sri Lanka has multiple origins. Monsoonal, Convectional and depressional rain accounts for a major share of the annual rainfall. The mean …

Sri Lanka Rainfall index, 1958-2020

2021-9-3 · In 2017, rainfall index for Sri Lanka was 1,656 mm. Though Sri Lanka rainfall index fluctuated substantially in recent years, it tended to decrease through 1967 - 2017 period ending at 1,656 mm in 2017. An indicator, developed by FAO, which represents the quality of the crop growing season.

Welcome to Website of Meteorological Department

2009-3-17 · Welcome to Website of Meteorological Department - Sri Lanka. Please see our new web site. 383, Bauddhaloka Mawatha, Colombo 07. History and the Overview. Weather Forecasts. Astronomical Information.

Statistical prediction of Sri Lankan rainfall during ...

Sri Lanka receives most rainfall during October to December (OND). Here we construct multiple linear regression models to forecast the OND Sri Lankan rainfall during 1979-2012 for lead times of 1 and 2 months. Correlation analysis was used to examine the relationship between Sri Lankan OND rainfall and global sea surface temperature (SST ...

Changing rainfall and its impact on landslides in Sri Lanka

During the recent past the rainfall pattern in Sri Lanka has shown a noticeable change. This paper describes the effect of this change on the occurrence of landslides and their impacts to eco systems. This study shows that most of the landslides occurring in Sri Lanka during northeast monsoons, southwest monsoons and second inter-monsoon were located in three distinctively separated areas ...

Often asked: When Last Rain In Sri Lanka?

Sri Lanka''s position between 5 and 10 north latitude endows the country with a warm climate, moderated by ocean winds and considerable moisture. The rainfall pattern is influenced by the monsoon winds of the Indian Ocean and Bay of Bengal and is marked by four seasons.

Climate and Weather

2021-10-9 · Sri Lanka is subject to two different monsoon rainy seasons affecting opposite poles of the island, which results in a high average annual rainfall. Around 1250mm (49.2ins) falls each year in the north-west and south-east of the pear-shaped island, with an annual average rainfall of 5000mm ( 197ins ) in the mountains of the southern central region.

Colombo, Western, Sri Lanka Historical Weather Almanac

Colombo, Western, Sri Lanka - Hourly past weather, almanac for Colombo including historical temperature, wind, rain, pressure and humidity stats | WorldWeatherOnline

Rainfall Distributions in Sri Lanka in Time and Space: An ...

However, in Sri Lanka, given a highly skewed distribution of daily rainfall totals, it transpires that the top 10% of the rainfall total comprises a very small number of …

State of water : Sri Lanka

2016-10-2 · Annual rainfall for each climate zone is over 2,000 mm/year for wet zones, between 1,500-2,000 mm for intermediate zones and 1,500 mm/year for dry zones (IGES 2007). These different climatic zones constitute a unique natural feature of the …

A Rainfall Intensity-Duration Threshold for Mass …

2020-8-12 · Rainfall over Sri Lanka is characterized by its tropical location and by the mon-soonal regime, and thus has a significant seasonal variation in the rainfall pat-tern. There are four climatologic seasons in Sri Lanka, namely, the northeast monsoon from December to February, the southwest monsoon from May to

Sri Lanka climate: Average Temperature, weather by month ...

Sri Jayawardenapura Kotte has a tropical climate. Sri Jayawardenapura Kotte has a significant amount of rainfall during the year. This is true even for the driest month. This location is classified as Af by Köppen and Geiger. The average annual temperature is 26.5 °C | 79.7 °F in Sri Jayawardenapura Kotte. The annual rainfall is 2668 mm ...

The Weather and Climate in Sri Lanka

2020-12-17 · Temperatures usually peak in April or May while hovering in the upper 80s F. Rain increases steadily in late March and peaks in June. Humidity is typically between 75 to 80 percent. There will still be plenty of sunshine even between thunderstorms. If you …

A Rainfall Intensity-Duration Threshold for Mass …

Mass movement in Sri Lanka is mainly triggered by heavy rainfall. International literature is rich of works defining rainfall intensity-duration models to identify the rainfall threshold for various types of Mass movement. However, studies have not focused to establish a relationship between intensity and duration of rainfall in Sri Lanka.

Sri Lanka Average Precipitation | 2021 Data | 2022 ...

Precipitation in Sri Lanka decreased to 216.65 mm in December from 405.22 mm in November of 2015. Precipitation in Sri Lanka averaged 142.05 mm from 1901 until 2015, reaching an all time high of 687.50 mm in December of 1957 and a record low of 1.20 …

Recent rainfall trend over Sri Lanka (1987–2017 ...

2019-11-14 · This study investigates trends in annual and seasonal rainfall over Sri Lanka using an Innovative Trend Analysis (ITA) and Mann–Kendall (MK) test with Sen''s slope estimator. The MK test showed increasing trends in annual rainfall at 24 stations (65%) with five stations showing significant increasing trend.

Average Monthly Weather in Sri Lanka with Rainfall Data ...

2020-7-7 · The average annual rainfall in Sri Lanka varies from under 900 mm in the driest parts of Sri Lanka (southeastern and northwestern) to over 5000 mm in the …

Rainfall in Sri Lanka

2011-1-24 · Rainfall in Sri Lanka. Rainfall in Sri Lanka. Rainfall. Annual 2540 mm to over 5080 mm in south west of the Island. Less than 1250 mm in the north west and south east of the Inland. Rainy Seasons. · South West Monsoon- May to August.

(PDF) Changes in Rainfall in Sri Lanka during 1966 – 2015

PDF | On Apr 30, 2017, K. L. A. A. Karunathilaka and others published Changes in Rainfall in Sri Lanka during 1966 – 2015 | Find, read and cite all the research you need on ResearchGate

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FECT| Foundation for Environment, Climate and Technology

2021-9-6 · We present some current rainfall monitoring metrics for Sri Lanka below: Maps of Total (Left) and Anomaly (Right) Rainfall for Sri Lanka from January to Last Month. Comparison of Current Year''s rainfall for Sri Lanka with the past 5 years. Rainfall deficits and excesses by …

What is the weather, climate and geography like in Sri Lanka

The best time to visit the southwest region of Sri Lanka During this time, the weather is warm; the city of Galle on the southwestern tip enjoys an average high of 29°C (84°F) for example. However, the Yala monsoon brings abundant rainfall to the southwest region …

South Asian perspective on temperature and rainfall ...

2019-9-1 · Rainfall events in Sri Lanka emphasize that rainfall extreme are mostly concentrated in southwestern parts, especially the Colombo and Ratmalana regions. It has been observed that the Nuwara Eliya district shows decreasing trends in all the extreme indices, including the frequency and intensity of rainfall (Sanjeewani and Manawadu, 2014).

(PDF) Trends of Rainfall in Sri Lanka over the Last Century

to extract the trends of annual rainfall depth in Sri Lanka over the last century. A statistically. significant increasing trend of rate 3.15 mm/year was observed at Colombo and decreasing trends ...

Hatton, Sri Lanka Precipitation Forecast | Weather …

2021-9-19 · 7-hour rain and snow forecast for Hatton, LK with 24-hour rain accumulation, radar and satellite maps of precipitation by Weather Underground.

Sri Lanka climate: average weather, temperature ...

2021-10-11 · The Sri Lankan capital, Colombo, is located in the rainiest part of the country, namely the south-western side. Here, 2,500 mm (99 in) of rain fall per year, with two maxima, in April-May and October-November, when precipitation exceeds 240 mm (9.5 in) per month.