13 Rainiest States in the United States

By PropertyClub Team
Jan 15th 2024
The United States is known for its diverse climate, ranging from arid deserts to humid subtropical regions. Rainfall patterns are crucial in shaping the landscape and influencing the local ecosystems. Some states experience frequent and heavy rainfall, earning them the reputation of being the rainiest states in the country. Read on to explore the wettest states in the US.

hash-mark13 Wettest States in the US

  1. Hawaii
  2. Louisiana
  3. Mississippi
  4. Alabama
  5. Florida
  6. Tennessee
  7. Arkansas
  8. Georgia
  9. North Carolina
  10. Connecticut
  11. South Carolina
  12. Kentucky
  13. Massachusetts


Average Annual Precipitation: 63.70

When it comes to rainfall, Hawaii stands out as the wettest state in the US. The island's tropical climate, surrounded by warm ocean waters, contributes to a consistent and substantial amount of rainfall. 

Mount Waialeale on the island of Kauai holds the record for one of the wettest spots globally, receiving an average annual rainfall of around 450 inches. The combination of trade winds and orographic lift, where moist air is lifted over mountainous terrain, creates ideal conditions for heavy rainfall.


Average Annual Precipitation: 60.09

Louisiana, with its unique blend of marshes, swamps, and bayous, experiences a high level of rainfall throughout the year. The state's proximity to the Gulf of Mexico exposes it to moisture-laden air masses, leading to frequent and intense rainfall events. 

New Orleans, one of Louisiana's major cities, is particularly vulnerable to heavy rain and occasional flooding due to its low-lying geography.


Average Annual Precipitation: 59.23

Mississippi, part of the southeastern region, encounters a humid subtropical climate with abundant rainfall. The state's topography, including the expansive Mississippi River Delta, contributes to increased humidity and precipitation. 

The combination of warm temperatures and the moisture-laden air from the Gulf of Mexico results in frequent rainstorms.


Average Annual Precipitation: 58.28

Alabama, located in the southeastern part of the United States, experiences a humid subtropical climate with generous rainfall. The state's proximity to the Gulf of Mexico exposes it to moist air masses, resulting in frequent thunderstorms and heavy rainfall. 

The northern part of Alabama, closer to the Appalachian Mountains, may experience slightly less rainfall than the southern regions. Overall, Alabama's climate supports lush vegetation and contributes to its reputation as one of the wetter states in the country.


Average Annual Precipitation: 54.57

Despite its nickname as the "Sunshine State," Florida experiences a considerable amount of rainfall, especially during the summer months. 

The combination of warm temperatures, sea breezes, and the presence of the Atlantic Ocean and the Gulf of Mexico contributes to the frequent thunderstorms and heavy rainfall in the region. Florida's climate is characterized by a distinct wet season from June to September.


Average Annual Precipitation: 54.22

Tennessee, situated in the southeastern United States, displays diverse climate patterns across its regions. The eastern part, including the Great Smoky Mountains, tends to receive more precipitation due to orographic lift, while the western part has a more moderate climate. 

Tennessee experiences a mix of thunderstorms, winter precipitation, and occasional tropical influences, all contributing to its overall average rainfall. The state's variability in topography and climate makes it an interesting case study in understanding regional rainfall patterns.


Average Annual Precipitation: 50.78

Arkansas, located in the southern central part of the US, encounters a humid subtropical climate, leading to substantial rainfall throughout the year. 

The state's diverse topography, including the Ozark Mountains in the north and the lowlands of the Mississippi Alluvial Plain in the east, contributes to variations in precipitation. The prevalence of thunderstorms, often accompanied by heavy rainfall, is a common weather feature in Arkansas.


Average Annual Precipitation: 50.72

Georgia, known for its agricultural output, experiences a humid subtropical climate with a significant amount of rainfall. The state's proximity to the Atlantic Ocean and the Gulf of Mexico influences its weather patterns, resulting in warm temperatures and frequent precipitation. 

Georgia's diverse landscapes, from the Blue Ridge Mountains in the north to the coastal plains in the south, contribute to varying rainfall levels across the state.

hash-markNorth Carolina

Average Annual Precipitation: 50.45

North Carolina, spanning from the Appalachian Mountains to the Atlantic Coast, showcases diverse climatic conditions. 

The state's western mountainous regions experience orographic lift, leading to increased rainfall, while the eastern coastal areas receive influences from the Atlantic Ocean. North Carolina's varied topography, combined with its subtropical climate, results in a range of precipitation patterns, making it one of the wetter states in the southeastern US.


Average Annual Precipitation: 50.39

Connecticut, located in the New England region, experiences a humid continental climate with distinct seasons. While it may not be considered one of the rainiest states, Connecticut still receives a moderate amount of precipitation throughout the year. 

Winters bring snowfall, while spring and summer contribute to rainfall, with occasional thunderstorms. The state's diverse topography, including hills and valleys, can influence local weather patterns.

hash-markSouth Carolina

Average Annual Precipitation: 49.80

South Carolina has a humid subtropical climate, which means it experiences warm temperatures and significant rainfall. The state is vulnerable to tropical systems, such as hurricanes and tropical storms, particularly during the Atlantic hurricane season. 

Coastal areas, including cities like Charleston and Myrtle Beach, often experience heavy rainfall associated with these weather events. Inland regions, characterized by forests and agricultural land, also benefit from the state's overall ample precipitation.


Average Annual Precipitation: 48.90

Kentucky, situated in the central part of the United States, has a diverse climate that includes humid subtropical and humid continental influences. The state experiences a moderate amount of rainfall, with variations across its different regions. The western part of Kentucky, closer to the Mississippi River, tends to receive slightly more rainfall than the eastern regions. 


Average Annual Precipitation: 47.70

Massachusetts has a humid continental climate with distinct seasons. The state experiences relatively consistent rainfall throughout the year, with slightly wetter conditions during the summer months. 

Massachusetts does not rank among the wettest states in the US, but its weather patterns, influenced by its proximity to the Atlantic Ocean, contribute to the overall climate. Coastal areas, including cities like Boston, may experience more frequent and intense storms, which can bring periods of heavy rainfall.