# Question: How Do You Calculate Average Annual Rainfall?

## How do you calculate average monthly rainfall?

Monthly precipitation is calculated by summing the daily precipitation for each month.

All monthly amounts are then summed and divided by the number of months used in the period (years) selected.

The Yearly Total is the sum of the averages for individual months shown in Column 5..

## How do you calculate rainfall per hour?

Search to find the detailed rainfall collections if you want more detailed rainfall intensity data. If all available is monthly average in mm, take the monthly average and divide by number of hours in that month. So if you had 300 mm in April, take 360 mm/(30 days * 24 hours) = 0.5 mm/hour average monthly intensity.

## What does 1mm of rain look like?

1mm rainfall means every one square meter area is filled with the water of height 1mm. … 1mm rainfall means every one square meter area is filled with the water of height 1mm. 1 square meter = 1000mm length ×1000mm breath. So 1mm rain means 1000mm length × 1000mm breath × 1mm height = 1litre of water.

## What is the study of rain called?

Earth rainfall climatology Is the study of rainfall, a sub-field of meteorology. Formally, a wider study includes water falling as ice crystals, i.e. hail, sleet, snow (parts of the hydrological cycle known as precipitation).

## What is mean monthly rainfall?

Mean rainfall (mm) The arithmetically averaged total amount of precipitation recorded during a calendar month or year.

## What is the meaning of average rainfall?

The two terms mean the same thing but different from annual rainfall. normal or average rainfall is the amount of precipitation that we expect per year (in a given area). it is obtained and set by calculating the average (mean) of precipitation recorded in an area during many years ( at least 30 years).

## What does rainfall in inches mean?

Rainfall amount is described as the depth of water reaching the ground, typically in inches or millimeters (25 mm equals one inch). An inch of rain is exactly that, water that is one inch deep. One inch of rainfall equals 4.7 gallons of water per square yard or 22,650 gallons of water per acre!

## How many Litres is 1mm of rain?

A rainfall of 1 mm supplies 0.001 m3, or 1 litre of water to each square metre of the field. Thus 1 ha receives 10 000 litres.

## What is the average annual rainfall in Temburong?

278 mm to 410 mmWet season: Temburong experiences its wet season almost the whole year with average rainfall ranging from 278 mm to 410 mm, with November considered as the wettest month and June as the driest month.

## What is the formula for calculating rainfall?

Divide by two to find the average radius. Find the average volume of rain = Depth x radius x radius x 3.14. Find the area at the top of the bucket (this is the area over which the rain is collected). Divide the rainfall volume by this area to get the rainfall.

## What is Brunei’s climate?

Climate. The climate in Brunei is tropical equatorial and humid subtropical at higher altitudes with heavy rainfall. The municipality of Bandar Seri Begawan’s climate is tropical equatorial with two seasons. Dry season is extremely hot (24 to 36 °C or 75.2 to 96.8 °F).

## What does 10 cm rainfall mean?

When poured in a measuring glass cylinder with 10 Sq Cm base, the height will be amplified to 10 Cm but graduation will show as 1 cm; 1 cm will be 1 mm;and 0.1 cm will be 0.1 mm. So rainfall can be measured correct up to 0.1 mm.

## What is the normal rainfall?

The globally averaged annual precipitation over land is 715 mm (28.1 in), but over the whole Earth it is much higher at 990 mm (39 in). Climate classification systems such as the Köppen classification system use average annual rainfall to help differentiate between differing climate regimes.

## How is rainfall calculated?

The most common rainfall measurement is the total rainfall depth during a given period, expressed in millimeters (mm). For instance, we might want to know how many millimeters of rain fell over the course of 1 h, 1 day, 1 month, or 1 year. You can easily get a rough measurement of rainfall depth at home.