Types of Clouds: Discover the 4 Main Groups and 12 Sub-Types Explained

Sep 5, 2025, 20:02 IST

Learn the 4 main types of clouds and 12 sub-types with clear examples. An easy guide to cloud formations for students, weather lovers, and exam prep.

Types of Clouds: Discover 4 Main Groups & 12 Sub-Types
Types of Clouds: Discover 4 Main Groups & 12 Sub-Types

There are mainly four types of clouds, which are further sub-categorised into 12 sub-types. Usually, when you look up at the sky, you will always find shifting shapes of clouds that are more than just a backdrop. Well, they often indicate clues of how the weather will be. In meteorology, clouds are classified by their appearance and altitude, which helps in forecasting weather conditions, predicting rain, storms, and even sunshine. Let us explore these types of clouds further, each divided into 12 sub-types broadly.

What are the 4 Main Types of Clouds?

These four groups form the foundation of cloud classification and all the clouds fall into one of four categories mentioned below:

  • Cirrus Clouds: High, thin, wispy formations made of ice crystals. They often signal fair weather but can also suggest changes ahead.

  • Cumulus Clouds: They are large, fluffy, cotton-like clouds that appear on sunny days. Further, towering versions may grow into storm clouds.

  • Stratus Clouds: Low, grey sheets that spread across the sky and often bring drizzle or fog-like conditions.

  • Nimbus Clouds: Dense, dark rain clouds that produce steady rain or snow.

What are the quick Ways to Identify Cloud Types?

When observing the sky, cloud types give quick weather cluesCirrus clouds are thin and wispy, found at high altitudes, often signalling fair weather but possible changes ahead. The next category is Nimbus or Nimbostratus clouds that appear dark and heavy, and they are the ones that usually bring rain. Next are Cumulus clouds that look like puffy cotton balls and typically indicate fair and pleasant weather. Meanwhile, Stratus clouds form blanket-like sheets that cover the sky. They are also often linked to overcast conditions and drizzle. If you’re sky-watching, here are some easy clues:

(Infographic showing clues to guess the four types of Clouds)

List of 12 Sub-Types of Clouds

There are a further  12 sub-types of clouds that meteorologists go further by breaking these into, based on shape, structure, and altitude.

S. No

Cloud Type

Height Level

Key Features

1.

Cirrus (Ci)

High

Wispy, feather-like strands.

2.

Cirrostratus (Cs)

High

Thin veil, halo effect around sun/moon.

3.

Cirrocumulus (Cc)

High

Small white patches, “mackerel sky.”

4.

Altostratus (As)

Mid

Grey/blue sheets cover the sky widely.

5.

Altocumulus (Ac)

Mid

Layered patches sometimes appear as rolls.

6.

Nimbostratus (Ns)

Mid-Low

Thick, dark clouds, steady rain/snow.

7.

Stratus (St)

Low

Uniform, grey, light drizzle.

8.

Stratocumulus (Sc)

Low

Lumpy cloud layers, light rain possible.

9.

Cumulus (Cu)

Low

Puffy, fair-weather clouds.

10.

Cumulonimbus (Cb)

Vertical

Thunderstorm clouds bring heavy rain & lightning.

11.

Towering Cumulus (Tcu)

Vertical

Tall, cauliflower-shaped, storm precursors.

12.

Fog (Ground-level Stratus)

Surface

Touches the ground, reduces visibility.

Must Read list of the largest Cloudbursts

Why Cloud Types Matter?

Recognising clouds isn’t just for weather enthusiasts. It plays a role in:

  • Weather ForecastingSpotting storm signals early.

  • Aviation Safety: Helping pilots avoid turbulence.

  • Agriculture: Farmers use cloud patterns to anticipate rainfall.

You must also see What is Cloudburst? 

Conclusion

Clouds are divided into 4 main types: Cirrus, Cumulus, Stratus, and Nimbus, with 12 detailed sub-types that give us more insight into weather conditions. By learning how to identify them, anyone can start reading the sky like a forecaster. To see more of such stories, you can go ahead and add this site to your preferred sources by clicking here.

Manvi Upadhyaya
Manvi Upadhyaya

Content Writer

    Manvi Upadhyaya is an experienced content writer who is passionate about creating authentic content by delivering credible facts to people. She holds a degree in Journalism and Mass Communication and is fond of art, languages, culture, and education. She has been a published co-author and compiler for many anthology book projects. She creates educational and informative content for international audiences. You can reach out to her at manvi.upadhyaya@jagrannewmedia.com

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    FAQs

    • Why is it important to identify cloud types?
      +
      Knowing cloud types helps in weather forecasting, aviation safety, and farming decisions, as clouds indicate upcoming weather patterns.
    • What are low-level clouds called?
      +
      Low-level clouds include stratus, stratocumulus, and cumulus. These form below 6,500 feet and often bring overcast skies or drizzle.
    • Which clouds bring rain?
      +
      Nimbostratus and Cumulonimbus clouds are the main rain-bearing types. Nimbostratus produces steady rain or snow, while cumulonimbus causes heavy showers and thunderstorms.
    • How many types of clouds are there in total?
      +
      While clouds are grouped into 4 main categories, they are further classified into 12 sub-types, such as cirrostratus, nimbostratus, and cumulonimbus.
    • What are the 4 main types of clouds?
      +
      The four main types are Cirrus, Cumulus, Stratus, and Nimbus. Each has a distinct appearance and is linked to specific weather conditions.

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