Mergui is slightly warmer than than Houston. On average, Mergui is 79.0°F while Houston is 69.9°F, a difference of 9.1°F. Houston is warmest on average in August, when the average high temperature is 94.5°F, while Mergui is warmest in April, when the average high temperature is 94.5°F. Houston and Mergui both are coolest in January, when the average low temperature is 43.2°F in Houston and 69.0°F in Mergui.
Mergui is practially underwater when compared to Houston. On average, Mergui has 162.3 in. of precipitation while Houston has 49.8 in., a difference of 112.5 inches.
Use the menu below to compare and chart different weather types for Houston and Mergui.
Average Dew Point ( �F ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 42.7 | 46.1 | 51.6 | 58.2 | 66.2 | 71.4 | 72.8 | 72.4 | 68.1 | 60.2 | 52.5 | 45.0 | 59.0 |
Mergui | 68.0 | 71.0 | 73.0 | 75.0 | 76.0 | 76.0 | 75.0 | 75.0 | 75.0 | 74.0 | 72.0 | 69.0 | 73.0 |
Average Relative Humidity ( % ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 73.3 | 72.9 | 72.6 | 73.0 | 74.6 | 75.1 | 74.1 | 73.6 | 74.4 | 74.8 | 75.4 | 74.7 | 74.1 |
Mergui | 73.0 | 75.0 | 78.0 | 79.0 | 86.0 | 91.0 | 93.0 | 94.0 | 92.0 | 86.0 | 79.0 | 75.0 | 83.0 |
Average Precipitation ( in ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 3.4 | 3.2 | 3.4 | 3.3 | 5.1 | 5.9 | 3.8 | 3.8 | 4.1 | 5.7 | 4.3 | 3.7 | 49.8 |
Mergui | 1.0 | 2.1 | 3.1 | 4.9 | 16.7 | 30.0 | 32.9 | 30.0 | 24.9 | 12.1 | 3.8 | 0.8 | 162.3 |
Average Number of Rainy Days ( Days ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 11.0 | 8.0 | 9.0 | 7.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 7.0 | 8.0 | 9.0 | 106.0 |
Mergui | 1.0 | 3.0 | 5.0 | 6.0 | 18.0 | 25.0 | 26.0 | 26.0 | 23.0 | 16.0 | 6.0 | 2.0 | 157.0 |
Average High Temperature ( �F ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 62.9 | 66.3 | 73.0 | 79.6 | 86.3 | 91.4 | 93.7 | 94.5 | 89.7 | 82.0 | 72.5 | 64.3 | 79.7 |
Mergui | 87.0 | 89.0 | 90.0 | 91.0 | 89.0 | 85.0 | 84.0 | 84.0 | 84.0 | 86.0 | 87.0 | 87.0 | 87.0 |
Average Low Temperature ( �F ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 43.2 | 46.5 | 52.5 | 59.4 | 67.6 | 73.3 | 75.1 | 74.8 | 69.8 | 60.9 | 52.1 | 44.6 | 60.0 |
Mergui | 69.0 | 71.0 | 73.0 | 75.0 | 75.0 | 74.0 | 73.0 | 73.0 | 73.0 | 73.0 | 71.0 | 69.0 | 72.0 |
Average Number of Days Above 90F/32C ( Days ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 0.7 | 7.4 | 20.7 | 26.4 | 27.1 | 17.0 | 3.0 | 0.1 | 102.4 | ||||
Mergui | 8.6 | 13.3 | 17.9 | 20.3 | 14.8 | 3.2 | 1.4 | 1.4 | 1.3 | 5.8 | 8.3 | 8.6 | 104.9 |
Average Temperature ( �F ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 53.1 | 56.4 | 62.7 | 69.5 | 76.9 | 82.4 | 84.4 | 84.6 | 79.8 | 71.5 | 62.3 | 54.4 | 69.9 |
Mergui | 78.0 | 80.0 | 81.0 | 83.0 | 82.0 | 79.0 | 78.0 | 78.0 | 78.0 | 79.0 | 79.0 | 78.0 | 79.0 |
Highest Recorded Temperature ( �F ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 84.0 | 91.0 | 91.0 | 95.0 | 99.0 | 105.0 | 104.0 | 109.0 | 109.0 | 96.0 | 89.0 | 85.0 | 109.0 |
Mergui | 95.0 | 97.0 | 99.0 | 99.0 | 98.0 | 98.0 | 93.0 | 93.0 | 91.0 | 96.0 | 94.0 | 97.0 | 99.0 |
Lowest Recorded Temperature ( �F ) | |||||||||||||
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City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 12.0 | 3.0 | 22.0 | 31.0 | 44.0 | 52.0 | 62.0 | 60.0 | 48.0 | 29.0 | 19.0 | 7.0 | 3.0 |
Mergui | 53.0 | 60.0 | 61.0 | 66.0 | 67.0 | 67.0 | 66.0 | 66.0 | 66.0 | 63.0 | 59.0 | 55.0 | 53.0 |
Average Length of Day ( Hours ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 10.9 | 11.6 | 12.4 | 13.3 | 14.1 | 14.5 | 14.3 | 13.6 | 12.7 | 11.8 | 11.1 | 10.7 | 12.6 |
Mergui | 11.9 | 12.1 | 12.4 | 12.8 | 13.1 | 13.2 | 13.2 | 12.9 | 12.5 | 12.2 | 11.9 | 11.8 | 12.5 |
Cooling Degree Days ( Days ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 15.0 | 23.0 | 71.0 | 172.0 | 371.0 | 520.0 | 601.0 | 609.0 | 443.0 | 229.0 | 74.0 | 27.0 | 3157.0 |
Mergui | 403.0 | 423.8 | 511.5 | 540.0 | 527.0 | 435.0 | 418.5 | 418.5 | 405.0 | 449.5 | 420.0 | 403.0 | 5354.8 |
Growing Degree Days ( Days ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 170.0 | 215.0 | 404.0 | 585.0 | 835.0 | 970.0 | 1066.0 | 1074.0 | 892.0 | 666.0 | 380.0 | 204.0 | 7463.0 |
Mergui | 868.0 | 847.5 | 976.5 | 990.0 | 992.0 | 885.0 | 883.5 | 883.5 | 855.0 | 914.5 | 870.0 | 868.0 | 10833.5 |
Average Daily Solar Radiation - Diffuse ( kWh/m2 ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 1.1 | 1.4 | 1.8 | 2.1 | 2.4 | 2.5 | 2.4 | 2.1 | 1.8 | 1.4 | 1.2 | 1.0 | 1.8 |
Mergui | 1.5 | 1.7 | 2.0 | 2.2 | 2.3 | 2.2 | 2.2 | 2.2 | 2.2 | 2.0 | 1.7 | 1.5 | 2.0 |
Average Daily Solar Radiation - Direct ( kWh/m2 ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 3.4 | 3.5 | 4.0 | 4.7 | 4.8 | 5.0 | 5.3 | 5.2 | 4.9 | 4.7 | 3.9 | 3.5 | 4.4 |
Mergui | 6.1 | 6.2 | 5.6 | 5.2 | 3.3 | 2.2 | 2.1 | 1.8 | 2.4 | 3.1 | 4.5 | 5.9 | 4.0 |
Average Daily Solar Radiation - Global ( kWh/m2 ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 2.7 | 3.2 | 4.2 | 5.2 | 5.6 | 5.9 | 6.0 | 5.6 | 4.9 | 4.0 | 3.0 | 2.5 | 4.4 |
Mergui | 5.1 | 5.7 | 5.8 | 5.9 | 4.6 | 3.7 | 3.7 | 3.5 | 3.9 | 4.1 | 4.5 | 4.9 | 4.6 |
Average Daily Solar Radiation - Reflected ( kWh/m2 ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 3.4 | 3.9 | 4.6 | 5.1 | 5.2 | 5.2 | 5.4 | 5.4 | 5.1 | 4.8 | 3.9 | 3.4 | 4.6 |
Mergui | 5.6 | 6.0 | 5.9 | 5.7 | 4.5 | 3.7 | 3.6 | 3.4 | 3.8 | 4.2 | 4.8 | 5.4 | 4.7 |
Maximum Daily Solar Radiation - Diffuse ( kWh/m2 ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 1.2 | 1.5 | 1.8 | 2.2 | 2.4 | 2.5 | 2.4 | 2.3 | 2.0 | 1.6 | 1.2 | 1.1 | 1.8 |
Mergui | 1.7 | 1.8 | 2.2 | 2.4 | 2.3 | 2.3 | 2.3 | 2.3 | 2.2 | 2.0 | 1.8 | 1.6 | 2.1 |
Maximum Daily Solar Radiation - Direct ( kWh/m2 ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 4.7 | 5.1 | 6.3 | 7.6 | 6.3 | 6.3 | 6.6 | 6.6 | 6.5 | 6.6 | 6.7 | 5.1 | 6.2 |
Mergui | 7.2 | 7.4 | 7.0 | 6.5 | 4.6 | 3.9 | 3.0 | 2.9 | 3.4 | 4.5 | 5.7 | 7.1 | 5.3 |
Maximum Daily Solar Radiation - Global ( kWh/m2 ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 2.7 | 3.2 | 4.2 | 5.2 | 5.6 | 5.9 | 6.0 | 5.6 | 4.9 | 4.0 | 3.0 | 2.5 | 4.4 |
Mergui | 5.1 | 5.7 | 5.8 | 5.9 | 4.6 | 3.7 | 3.7 | 3.5 | 3.9 | 4.1 | 4.5 | 4.9 | 4.6 |
Maximum Daily Solar Radiation - Reflected ( kWh/m2 ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 4.3 | 5.0 | 5.9 | 6.6 | 5.9 | 5.8 | 6.0 | 6.1 | 6.1 | 6.0 | 5.6 | 4.5 | 5.6 |
Mergui | 6.2 | 6.6 | 6.6 | 6.3 | 5.4 | 4.9 | 4.3 | 4.3 | 4.6 | 5.1 | 5.5 | 6.0 | 5.5 |
Minimum Daily Solar Radiation - Diffuse ( kWh/m2 ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 1.0 | 1.3 | 1.5 | 1.7 | 2.2 | 2.3 | 2.2 | 2.0 | 1.6 | 1.2 | 0.9 | 0.9 | 1.6 |
Mergui | 1.3 | 1.4 | 1.8 | 2.0 | 2.2 | 2.1 | 1.8 | 1.9 | 2.1 | 2.0 | 1.6 | 1.3 | 1.8 |
Minimum Daily Solar Radiation - Direct ( kWh/m2 ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 2.2 | 1.9 | 2.7 | 3.1 | 3.2 | 3.3 | 4.5 | 3.8 | 3.5 | 2.4 | 1.6 | 2.0 | 2.8 |
Mergui | 4.8 | 5.2 | 4.0 | 2.9 | 1.8 | 1.3 | 0.8 | 0.8 | 1.6 | 2.3 | 2.1 | 4.3 | 2.7 |
Minimum Daily Solar Radiation - Global ( kWh/m2 ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 2.1 | 2.4 | 3.4 | 4.2 | 4.6 | 4.8 | 5.5 | 4.8 | 4.1 | 2.8 | 1.9 | 1.9 | 3.6 |
Mergui | 4.5 | 5.2 | 4.9 | 4.4 | 3.5 | 3.0 | 2.4 | 2.4 | 3.2 | 3.5 | 3.1 | 4.2 | 3.7 |
Minimum Daily Solar Radiation - Reflected ( kWh/m2 ) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
Houston | 2.6 | 2.7 | 3.6 | 4.1 | 4.3 | 4.3 | 5.0 | 4.6 | 4.3 | 3.2 | 2.2 | 2.4 | 3.6 |
Mergui | 4.9 | 5.4 | 4.9 | 4.2 | 3.5 | 2.9 | 2.4 | 2.4 | 3.1 | 3.6 | 3.2 | 4.5 | 3.8 |