Does rain affect your internet service?

Have you been in the middle of important work or binge-watching the latest TV show only to get stuck on a crawling internet connection when it's pouring outside?

Let's unpack the possible causes so you know why your internet is so slow when it rains and if there's anything you can do about it.

Severe rainstorms are likely to affect your internet service

You might be affected by heavy rainfall in the following ways:

Physical damage to the network

Water seeping into electrical connections

Wi-Fi signal interference

The behaviour of other humans in response to changes in weather

These are all likely to cause slower internet speeds or, in more extreme cases, network outages.

Rain can easily wreak havoc on old infrastructure

Most Australian households are connected to the NBN for broadband. But because there's no one-size-fits-all approach to the NBN rollout, the impact of the rain is different depending on the NBN connection type in your home.

• FTTN/FTTC connections are more likely to get slow internet during bad weather since these still use quite a bit of old copper wires from the old ADSL build.

• Connections built mostly with fibre optic cables like FTTB and FTTP (otherwise known as FTTH) are less likely affected by rain as these have fewer old copper wires.

• FTTN/FTTC connections are more likely to get slow internet during bad weather since these still use quite a bit of old copper wires from the old ADSL build.

• Connections built mostly with fibre optic cables like FTTB and FTTP (otherwise known as FTTH) are less likely affected by rain as these have fewer old copper wires.

• But how?

  During periods of heavy rainfall, the water droplets often make contact with the copper wires in the NBN pits.

  Since much of the cabling is underground, moisture can also get trapped in the cables or connectors which can interfere with signal transmission or block them off completely.

  Even when the rain clears up, there's a high chance that the cabling could remain damp or retain moisture due to humidity for a long period after. This impacts the internet connection in your home, plus the effects will be extended to your entire neighbourhood or suburb.

Satellite internet is affected the most

Why?

• Data has to travel through the air instead of wires buried underground.
• The equipment for satellite internet is placed outdoors and more prone to getting damaged.

For context, the path the data travels goes from the wire you see outside your house all the way to a satellite miles away in space and then back to earth to a station on ground.

That's a long journey and bad weather can easily block or weaken satellite signals via radio waves.

It could just be your Wi-Fi connection

Blaming your Wi-Fi network when it's raining may be a waste of time if it's in fact the Wi-Fi signals travelling to your home that bad weather has disrupted.

There's little your internet provider can do until the skies settle down.

Human behaviour is most likely the main cause of slow internet during bad weather

While wet weather can affect your internet cabling and cause outages, the main reason for your super slow internet is more likely because everybody has decided to stay indoors and jump online, just like you.

This causes an increase in network traffic, meaning more congestion resulting in slower speeds.

4 ways to fix weather-related internet problems

To navigate a spotty internet connection, you could consider some of the following quick solutions:

1. Limiting the number of devices connected to the internet.
2. Moving your device closer to the modem/router.
3. Switching off your modem/router for a minute and then turning it back on again.
4. Consider turning on your dehumidifier or investing in one as humidity can sometimes affect the strength of Wi-Fi signals.

Frequently asked questions

• Can weather affect your internet connection?

  Yes, heavy rains and storms can affect your Wi-Fi and internet connection. Severe weather could damage your network infrastructure, causing your home Wi-Fi network to disconnect. More people are also online and staying indoors when it rains, causing a general slowdown in internet speeds.

• Do heatwaves and high winds have a similar impact to rain?

  Yes, they do. Both extreme heat and high winds can cause physical damage to networking equipment or have them work slower. It's similar to your computer fan not working, which causes the tech to overheat.

  Another example is for those living in rural Australia with satellite internet who may feel the consequences as satellite signals have to travel long distances in the atmosphere. Similarly, strong winds can sway or flex satellite dishes.

To make sure you get accurate and helpful information, this guide has been edited by Joselle Delos Reyes as part of our fact-checking process.

Written by

Mariam Gabaji

Editor I Tech and utilities expert

Mariam Gabaji is an editor and tech and utilities expert at Finder with 12+ years of experience as a journalist. Her goal is to help households cut through the industry jargon and save money on their household bills. Her expertise is often featured in media including the ABC, Yahoo Finance, 9News, 7News, A Current Affair, The Guardian, SBS and Money Magazine. See full bio

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Mariam has written 247 Finder guides across topics including:

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