Ban San Sai (2) Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Ban San Sai (2), Chiang Mai Province, Thailand. This average is based on long-term data collected between 1990 and 2020. Now, let's break down all the details for a clearer picture.
Ban San Sai (2) has a notably wet climate with abundant precipitation, recording 1221 mm (48 in) of rainfall per year. It does, however, have a distinct dry and rainy season during certain months. Have a look at our detailed charts below to see how precipitation varies throughout the year.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Significant seasonal changes in precipitation occur throughout the year. During the wettest month, August receives substantial rainfall, averaging 262 mm (10 in) of precipitation, recorded across 20 rainy days.
In contrast, the driest month, February brings less rainfall, with 4.8 mm (0.2 in) over a single rainy day.
August, the wettest month, has a maximum daytime temperature of 32°C (90°F). The city receives 116 hours of sunshine in this period. During the driest month February you can expect a temperature of 34°C (93°F). For more detailed insights into the city's temperatures, visit our Ban San Sai (2) Temperature page.
Annual Rainfall in Thailand: City Comparison
The map below shows the annual precipitation across Thailand. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Ban San Sai (2) vs World: Rainfall Compared
Ban San Sai (2)'s average annual precipitation is 1221 mm (48 in). Let's compare this to some popular worldwide tourist destinations:
Seville, Spain, experiences 541 mm (21 in) of rainfall annually, with wet winters and dry summers typical of southern Spain.
Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.
Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.
Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm (66 in) of annual rainfall, with the heaviest precipitation occurring during September and October.
Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.
Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.
Precipitation has a very strong role in determining the local climate and ecosystem:
- Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
- Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.
- "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
- The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
- The greatest snowfall recorded was on Mt. Rainier, Washington State, USA—over 31.5 meters (103 feet) fell during the winter of 1972.
For more detailed information about Ban San Sai (2)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Ban San Sai (2) Climate page.
