Updated:24 October 2026
Rank 1-23 of the best 100 litre Rain Barrels
Our recommendation Price Customer rating
1. Comparison winner
Black Slim Line Water Collectors 100L with Stands & Filler Kits
Black Slim Line Water Collectors 100L with Stands & Filler Kits
Available immediately
free shipping
  • 100 litres of capacity provides ample storage for collected rainwater
  • made from durable material for long-lasting use
  • includes a stand which elevates the butt for easy filling of watering cans
Our rating
9,8
very good
100 Litre Slimline Garden Water Butts Set
100 Litre Slimline Garden Water Butts Set
Available immediately
free shipping
  • 200 litres of water storage capacity
  • made from durable black material
  • includes a compatible stand
Our rating
9,8
very good
3. Best value
RainSaver 100L Grey Water Butt
RainSaver 100L Grey Water Butt
Available immediately
free shipping
  • 100 litres of capacity for storing collected rainwater
  • Weather-resistant plastic construction
  • Multi-piece stand raises the water butt for easier access when filling watering cans
Our rating
9,6
very good
Garden Rain Barrels Collapsible Rainwater Tank 50-1000L with Tap and Zip Lid – Portable Water Storage for Garden Irrigation, Outdoor and Emergency Use (100L)
Garden Rain Barrels Collapsible Rainwater Tank 50-1000L with Tap and Zip Lid – Portable Water Storage for Garden Irrigation, Outdoor and Emergency Use (100L)
Available in a few days
free shipping
  • storage capacity for rainwater from 50 to 1,000 litres
  • made from thick, weather-resistant PVC that resists cracking and corrosion
  • stable on a flat surface during use
Our rating
9,6
very good
5. Bestseller
100L Slimline Black Rainfall Mini Water Butt Kit
100L Slimline Black Rainfall Mini Water Butt Kit
Available immediately
free shipping
  • 100 litres of capacity for efficient water storage
  • made from recycled plastic, contributing to environmental sustainability
  • includes a stand with dimensions W38cm x H29cm for secure positioning
Our rating
9,6
very good
Mini Rainsaver 100 Litre Water Butt Kit
Mini Rainsaver 100 Litre Water Butt Kit
Available immediately
free shipping
  • Made from recyclable plastic in the UK
  • Includes a three-part stand for positioning in a garden or on a patio
  • Rain diverter fits standard 68 mm round or 65 mm square plastic downpipes
Our rating
9,6
very good
No reviews yet
Portable Folding Rain Barrel with Stand and Tap
Portable Folding Rain Barrel with Stand and Tap
Available in a few days
free shipping
  • Capacity: stores between 100 and 1,000 litres of rainwater
  • Material: made from PVC mesh cloth
  • Stand: includes a support rod for stability
Our rating
9,6
very good
No reviews yet
Wiltec 100 L Collapsible Rainwater Tank with Overflow Protection
Wiltec 100 L Collapsible Rainwater Tank with Overflow Protection
Available immediately
free shipping
  • Stores up to 100 litres of rainwater for garden or greenhouse use
  • Made from durable, weather-resistant fabric that folds away for storage
  • Supported by robust rods for stability when set up outdoors
Our rating
9,6
very good
Dellonda 100L Collapsible Garden Water Butt - DG8
Dellonda 100L Collapsible Garden Water Butt - DG8
Available immediately
free shipping
  • 100 litres of storage for rainwater collection
  • includes a drain tap and outlet valve with filter for easy water access
  • adjustable feet provide stability
Our rating
9,5
very good
Charles Bentley 100L Slimline Garden Water Butt Set
Charles Bentley 100L Slimline Garden Water Butt Set
Available immediately
free shipping
  • 100 litres of storage for rainwater reuse
  • constructed from high-density plastic for weather resistance
  • four-part stand included for stability
Our rating
9,5
very good
BURI Universal Bin 100 L Black Rain Barrel with Lid
BURI Universal Bin 100 L Black Rain Barrel with Lid
Available immediately
free shipping
  • Kapazität: stores rainwater for garden use
  • Material: durable construction suitable for outdoor use
  • Stand: raised base keeps the barrel stable and off the ground
Our rating
9,5
very good
JIESOO 100L Plastic Rainwater Barrel with Tap
JIESOO 100L Plastic Rainwater Barrel with Tap
Available in a few days
free shipping
  • Large-capacity bucket for storing water or food
  • Food-grade, BPA-free plastic body with a stainless steel filter
  • Suitable for collecting and storing rainwater, with a tap for dispensing and a vent to support airflow
Our rating
9,4
good
No reviews yet
Bowers Bargains 100L Slimline Water Butt Set
Bowers Bargains 100L Slimline Water Butt Set
Available immediately
free shipping
  • 100-litre capacity for storing collected rainwater
  • Durable construction designed to withstand different weather conditions
  • Includes a stand measuring approximately 40.5 × 40.5 × 30.5 cm to raise the water butt for easier access to the tap
Our rating
9,3
good
Outdoor Slim Line Water Butt 100L with Tap and Stand
Outdoor Slim Line Water Butt 100L with Tap and Stand
Available immediately
free shipping
  • available in capacities of 100 or 210 litres
  • constructed from durable materials for long-lasting use
  • includes a stand for stable positioning
Our rating
9,1
good
100L Slimline Rainwater Butt
100L Slimline Rainwater Butt
Available immediately
free shipping
  • 100 litres capacity for storing rainwater for garden use
  • includes a stand to position the water butt conveniently
  • a lid is included to keep debris out
Our rating
9,0
good
Pluto Packaging 100 Litre Slim Line Water Butt (LRGSMLB)
Pluto Packaging 100 Litre Slim Line Water Butt (LRGSMLB)
Available immediately
free shipping
  • 100 or 210 litres of rainwater storage
  • black, durable material
  • stand elevates the water butt for easy access
Our rating
9,0
good
TFBF 100L Slimline Water Butt with Tap and Lid
TFBF 100L Slimline Water Butt with Tap and Lid
Available immediately
free shipping
  • Stores up to 100 litres of rainwater for garden use
  • Made from durable black plastic for outdoor use
  • Includes a secure lid to help keep debris out of the stored water
Our rating
9,0
good
Genérico Collapsible Water Container 100 L - Portable Water Storage Tank
Genérico Collapsible Water Container 100 L - Portable Water Storage Tank
Available immediately
free shipping
  • Capacity: holds a large volume of rainwater for a reliable supply during dry periods or disruptions
  • Material: made from rot resistant PVC to withstand cold conditions
  • Stand: foldable and lightweight design for easy carrying and storage
Our rating
8,9
good
No reviews yet
Bowers Bargains 100 L Slimline Water Butt with Tap and Lid
Bowers Bargains 100 L Slimline Water Butt with Tap and Lid
Available immediately
free shipping
  • 210-litre capacity provides water storage for regular garden watering
  • A secure lid helps keep debris out and reduce water evaporation
  • Collects and stores rainwater from guttering downpipes for watering plants and gardens
Our rating
8,9
good
Black Slim Line 100L Water Butt Kit
Black Slim Line 100L Water Butt Kit
Available immediately
free shipping
  • 100 litres of capacity for storing rainwater
  • made from durable black plastic
  • includes a sturdy stand for stability
Our rating
8,9
good
Edena 100L Slim Space Saver Water Butt with Tap, Lid & Stand – Black
Edena 100L Slim Space Saver Water Butt with Tap, Lid & Stand – Black
Available immediately
free shipping
  • 100 litres capacity to store rainwater collected from your guttering system
  • made from UV stabilised plastic that resists cracking and colour fading for durable outdoor use
  • stand included for stable placement beside sheds, fences or downpipes
Our rating
8,8
good
100L Slimline Garden Water Butt Kit with Stand
100L Slimline Garden Water Butt Kit with Stand
Available immediately
free shipping
  • 100 litres of water storage capacity
  • made from high density plastic
  • includes a stand to elevate the water butt for easy filling of watering cans
Our rating
8,8
good
Space Saver 100L Water Butt Kit
Space Saver 100L Water Butt Kit
Available immediately
free shipping
  • 100 litres of rainwater storage
  • made from durable plastic
  • includes a handy stand for stability
Our rating
8,6
good

Similar 100 litre Rain Barrel comparisons

100 litre Rain Barrels buying guide: How to choose the right product from the above 100 litre Rain Barrels test or comparison

Understanding the Benefits of a 100 Litre Rain Barrel

Conservation of Water

Using a 100 litre rain barrel allows us to collect and store rainwater, which significantly reduces our dependence on mains water for gardening and outdoor cleaning tasks. This practice not only conserves a precious resource but also contributes to reducing our water bills.

Environmental Impact

By collecting rainwater, we are helping to mitigate stormwater runoff, which can lead to local flooding and pollution. Our rain barrels can play a role in replenishing groundwater and improving the overall health of our local ecosystems.

Convenience and Accessibility

A 100 litre rain barrel provides us with easy access to water for various tasks, particularly during dry spells. Having this readily available water source means we can easily tend to our plants or clean our outdoor spaces without needing to reach for the hose.

Choosing the Right Material for Your Rain Barrel

Durability with Plastic Barrels

Plastic rain barrels are lightweight and resistant to rust and rot, making them an ideal choice for ease of handling and longevity. They typically come in various colours and styles, allowing us to find one that suits our outdoor aesthetics.

The Benefits of Wooden Barrels

Wooden barrels offer an attractive, rustic look and are often made from sustainable materials. While they may require more maintenance compared to plastic, their natural appearance can complement a garden beautifully.

Metal Barrels for Longevity

Metal rain barrels, especially those made of galvanised steel, can be very durable and withstand various weather conditions. However, they tend to be heavier and can be prone to rust if not properly coated or maintained.

Key Features to Look for in a 100 Litre Rain Barrel

Efficient Drainage System

A good rain barrel should have an efficient drainage system to prevent overflow during heavy rains. We should look for a design that includes a shut-off valve or a spigot at the bottom for easy filling of watering cans or connecting hoses.

Built-In Mosquito Prevention

It’s crucial to select a rain barrel with a lid or mesh screen to prevent mosquitoes and debris from contaminating the water. This feature ensures that our harvested water remains clean and safe for use.

Visual Aesthetics

Since our rain barrel will be part of our outdoor space, we should choose one that matches our garden’s design. Many models come in various colours and shapes, so we can find one that complements our landscaping.

Installation Tips for Your Rain Barrel

Choosing the Right Location

When planning to install a 100 litre rain barrel, it’s important to position it under a downspout for effective water collection. Ideally, we should place it on a flat, stable surface to avoid tipping and ensure safety.

Preparing for Installation

Before we start, we may need some tools like a level, some screws, and possibly paving stones if we’re creating a base. Taking these steps can help prevent issues down the line, ensuring our rain barrel functions effectively.

Connecting the Downspout

We will need to consider whether to modify the downspout leading into our barrel. Several connection kits are available, making it easy to direct the water flow from the gutter into the barrel securely.

Maximising Water Usage with Your Rain Barrel

Best Practices for Watering

To make the most of the water collected, we should plan our watering schedule around rainfall patterns. Watering in the early morning or late afternoon can help us maintain optimal moisture levels while reducing evaporation.

Connecting Multiple Barrels

If we have a larger garden or simply want to collect more rainwater, we might consider connecting multiple barrels. This can be done easily with connectors and allows us to maximise our water savings.

Utilising for Various Purposes

Beyond gardening, the water from our rain barrel can be used for washing outdoor furniture, cleaning patios, or even rinsing off our gardening tools, thus broadening the utility of our rainwater collection.

Table of contents
  1. Understanding the Benefits of a 100 Litre Rain Barrel
  2. Choosing the Right Material for Your Rain Barrel
  3. Key Features to Look for in a 100 Litre Rain Barrel
  4. Installation Tips for Your Rain Barrel
  5. Maximising Water Usage with Your Rain Barrel

Overview

1. Comparison winner
Black Slim Line Water Collectors 100L with Stands & Filler Kits
Our rating
9,8
very good
Black Slim Line Water Collectors 100L with Stands & Filler KitsAvailable immediately
100 Litre Slimline Garden Water Butts Set
Our rating
9,8
very good
100 Litre Slimline Garden Water Butts SetAvailable immediately
3. Best value
RainSaver 100L Grey Water Butt
Our rating
9,6
very good
RainSaver 100L Grey Water ButtAvailable immediately
Garden Rain Barrels Collapsible Rainwater Tank 50-1000L with Tap and Zip Lid – Portable Water Storage for Garden Irrigation, Outdoor and Emergency Use (100L)
Our rating
9,6
very good
Garden Rain Barrels Collapsible Rainwater Tank 50-1000L with Tap and Zip Lid – Portable Water Storage for Garden Irrigation, Outdoor and Emergency Use (100L)Available in a few days
5. Bestseller
100L Slimline Black Rainfall Mini Water Butt Kit
Our rating
9,6
very good
100L Slimline Black Rainfall Mini Water Butt KitAvailable immediately
Mini Rainsaver 100 Litre Water Butt Kit
Our rating
9,6
very good
No reviews yet
Mini Rainsaver 100 Litre Water Butt KitAvailable immediately
Portable Folding Rain Barrel with Stand and Tap
Our rating
9,6
very good
No reviews yet
Portable Folding Rain Barrel with Stand and TapAvailable in a few days
Wiltec 100 L Collapsible Rainwater Tank with Overflow Protection
Our rating
9,6
very good
Wiltec 100 L Collapsible Rainwater Tank with Overflow ProtectionAvailable immediately
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