Fixed Wireless is generally the most affected because it relies on radio signals between towers and antennas.
Heavy rain, storms, and dense cloud cover can reduce signal quality and cause temporary instability.
Does Weather Affect nbn®?
By: Riza
Posted: 26 May 2026
Last Updated: 26 May 2026
Ever noticed your internet slowing down just as the rain starts pouring, or a storm rolls in? You are not imagining it.
Many Australians experience slower internet speeds or temporary dropouts during heavy rain, storms, or extreme heat. While modern nbn® infrastructure is built to handle Australia’s unpredictable climate, some connection types such as Fixed Wireless and older copper-based services are more sensitive to weather conditions than fibre connections.
Understanding how weather affects your internet can help you choose more reliable nbn® plans, improve your home setup, and reduce frustrating slowdowns during bad weather.
Can Weather Really Affect Your Internet Connection?
Yes, weather can affect internet performance in some situations.
Australia’s climate can be unpredictable. From summer heatwaves and tropical storms to strong winds and heavy rainfall, these conditions can sometimes interfere with broadband infrastructure and network equipment.
The impact usually depends on the type of connection you have. Fibre-based services are generally more stable, while wireless and older copper-based technologies are more likely to experience temporary slowdowns or dropouts during bad weather.
The Australian Competition and Consumer Commission (ACCC) notes that internet speeds can vary due to network congestion, technology type, and environmental factors.
How Different Weather Conditions Affect nbn®
Rain and Storms
Heavy rain and storms are among the most common causes of weather-related internet issues.
Storms may also cause:
damaged network cables
power outages
water entering older copper lines
lightning damage to equipment
This can lead to temporary slowdowns or connection dropouts.
Extreme Heat
High temperatures can place stress on outdoor network equipment and electrical systems.
Heatwaves may affect cabinets, cooling systems, and even home networking equipment. Modems placed in direct sunlight or enclosed spaces can also overheat and perform poorly.
Using a reliable compatible nbn® modem and keeping it in a cool, ventilated area can help maintain a stable connection during summer.
Wind and Physical Damage
Strong winds can physically damage infrastructure, especially overhead cables and outdoor equipment.
Note:
Fallen branches, damaged poles, or loose cables may interrupt internet services until repairs are completed.
Which nbn® Technologies Are Most Affected by Weather?
Not all nbn® technologies respond to weather in the same way.
Fixed Wireless
FTTN and Copper Connections
FTTN (Fibre to the Node) and older copper connections can be affected by moisture, corrosion, and ageing infrastructure.
Rainwater entering damaged copper lines may lead to slower speeds or connection dropouts.
FTTP and Fibre Connections
FTTP (Fibre to the Premises) is usually the most reliable option.
Fibre optic cables are less affected by moisture and electrical interference, making them more stable during poor weather conditions.
According to nbn® Co, fibre infrastructure is designed to perform reliably across varying environmental conditions.
Does Weather Affect Wi-Fi or Just nbn®?
Sometimes the issue is not your nbn® connection at all. It could be your Wi-Fi setup.
Your nbn® connection brings internet into your home, while Wi-Fi distributes that connection around your house.
Bad weather can highlight existing Wi-Fi issues, especially if:
your modem is outdated
the signal is blocked by walls
there is interference from other electronics
the modem is poorly positioned
Upgrading your nbn® modem may help improve in-home performance and coverage.
What You Can Do If Your nbn® Is Slow During Bad Weather
If your internet slows down during storms or heavy rain, try these simple troubleshooting steps:
restart your modem
check cables for moisture or visible damage
move your modem away from interference sources
keep your modem ventilated and cool
use Ethernet for gaming or video calls
check for outages with your provider
upgrade older networking equipment if needed
Note:
In many cases, weather-related slowdowns are temporary and improve once conditions settle.
When to Contact Your Internet Provider
You should contact your provider if:
your connection regularly drops during light rain
outages continue long after bad weather passes
speeds remain unusually slow
your modem shows constant errors
you notice damaged cables or equipment
Persistent issues may indicate a line of fault or infrastructure problem that requires further investigation.
Why Customers Trust Yomojo for Reliable nbn®
Having the right provider can make a noticeable difference to your internet experience.
Yomojo offers flexible home internet options designed for Australian households looking for reliable connectivity and straightforward plans.
Yomojo currently holds a 4.8-star rating on ProductReview.com.au from Australian customers.
Whether you need internet for streaming, gaming, remote work, or everyday browsing, choosing dependable home nbn® plans can help improve stability throughout the year.
Yomojo also offers business internet solutions for users needing reliable connectivity for work and operations.
Summary: Does Weather Affect nbn®?
Weather can affect some nbn® connections, especially Fixed Wireless and older copper-based technologies. Heavy rain, storms, extreme heat, and strong winds may contribute to temporary slowdowns or outages.
The good news is that modern fibre connections are designed to be much more reliable, even during Australia’s unpredictable weather conditions. If your internet struggles during bad weather, improving your home setup, checking your equipment, or upgrading to reliable nbn® plans may help improve your overall experience.