running-light-rainy-season-waterproof-guide

How to Enjoy Night Running Safely on Rainy Days | Choosing Waterproof Running Lights and Understanding IPX Ratings

Aiden Tsang
📌 Key points of this article: We answer questions like "I'm worried my running light will break in the rain" and "I don't understand the difference between waterproof and water-resistant." We explain how to correctly interpret IPX ratings and how to choose a waterproof running light that can be used safely during the rainy season and typhoon season.

Many runners likely wonder, "I want to run during the rainy season, but I'm worried my running light will break in the rain," or "It says it's waterproof, but how much rain can it really withstand?"

In fact, the waterproof performance of running lights is clearly defined by the international standard "IPX," where a higher number indicates higher waterproof performance. This article explains how to correctly read IPX ratings, provides a guideline for the waterproof level needed for running in the rain, and details the equipment to keep you running safely through the rainy and typhoon seasons.

What is the IPX waterproof rating? Explained simply

IPX (International Protection) is an international standard that indicates the waterproof and dustproof performance of electronic devices. A higher number, such as "IPX4" or "IPX7," indicates higher waterproof performance.

IPX4
Water-resistant
Withstands splashing water from any direction. OK for light rain/sweat. Not suitable for heavy rain.
IPX5
Waterproof
Withstands water jets from any direction. Mostly fine for normal rain/sweat during running.
IPX6
Waterproof
Withstands powerful water jets from any direction. Can be used in typhoons/heavy rain.
IPX7
Submersible
Withstands submersion in 1m of water for 30 minutes. No water intrusion even if dropped in a puddle. Most reliable waterproof performance.

Required waterproof level by rain intensity

Weather/Situation Estimated Rain Intensity Recommended IPX Level Reason
Light rain/Drizzle Less than 1mm/h IPX4 or higher Similar to sweat, water-resistant is sufficient
Normal rain 1-10mm/h IPX5 or higher IPX5 is safe for continuous rain
Heavy rain/Rainy season 10-30mm/h IPX6 or higher Requires resistance to strong water jets
Typhoon/Downpour Over 30mm/h IPX7 recommended Consider risk of falling into puddles/submersion
Stepping in puddles/Running along rivers - IPX7 recommended Possibility of direct splash or temporary submersion
⚠️ The pitfall of "waterproof" vs. "water-resistant": Products described only as "waterproof" may not specify their IPX rating. Always check "what IPX rating it supports" before purchasing. "Water-resistant" often corresponds to IPX4, which carries a risk of malfunction in heavy rain.

Why rain running requires a "waterproof light"

Using a non-waterproof running light in the rain carries the following risks:

  • Water intrusion into circuits: Water can enter through buttons or charging ports, short-circuiting and damaging internal components.
  • Battery swelling/leakage: If moisture reaches the battery, chemical reactions can cause swelling or leakage, which is dangerous.
  • Sudden light failure during a run: If the light suddenly goes out due to rain, visibility is lost during night running, increasing the risk of accidents.
  • Clip rust: Metal clips can rust and become stiff, making attachment and detachment difficult.

In other words, using a non-waterproof light in the rain is not only a risk of malfunction but also a direct safety risk. For runners who run during the rainy season or in the rain, we strongly recommend a waterproof running light with IPX5 or higher, and ideally IPX7.

Rainy weather running safety checklist

🌧️ Pre-run check for rainy night runs

  • Is your running light confirmed to be IPX5 waterproof or higher?
  • Is the charging port cover securely closed?
  • Is the clip securely attached to your wet clothing?
  • Are you wearing reflective rainwear or a windbreaker?
  • Are your shoes/socks waterproofed (waterproof shoes or waterproofing spray)?
  • Is your smartphone in a waterproof case or armband to prevent it from getting wet?
  • Are you prepared to slow your pace as road surfaces are slippery in the rain?
  • Are you able to decide to switch to indoor running in case of typhoons, heavy rain, or lightning?

Why visibility is especially important for running in the rain

Night running in rainy weather makes it harder for drivers to see runners compared to clear days. The reasons are as follows:

Factor Impact Countermeasure
Rain fogs up windshields Driver's visibility is significantly reduced Flashing mode makes you more noticeable from afar
Reflection of rain on the road makes runners hard to see Boundary between runner and road is unclear High brightness/flashing mode asserts your presence
Rain noise masks runner's footsteps Drivers are less likely to notice you Emphasize visual presence with a running light
Wearing dark rainwear blends in Nighttime visibility is further reduced Combination of reflective wear + running light

Especially on rainy days, it's crucial to utilize the flashing mode of your running light to ensure drivers notice you from a distance.

Care for your waterproof running light

  • Wipe off moisture with a soft cloth after use: Pay extra attention to the clip and charging port area.
  • Open and dry the charging port cover: Water may have entered the port cover. Open the cover and allow it to air dry before charging.
  • Avoid drying in direct sunlight or high temperatures: Placing it in a hot environment for rapid drying can degrade the battery and materials. Air dry at room temperature in the shade.
  • Regular inspection of waterproof gaskets: Every 3 months, check the charging port and waterproof gaskets for deterioration or cracks. If deterioration is found, refrain from using it.

Recommended waterproof running light

IPX7 Fully Waterproof · 700lm · Hand Wave Sensor
Clip-on Running Light|700 Lumens・Hand Wave Sensor・IPX7 Waterproof・USB-C Charging

With IPX7 full waterproofing (submersible in 1m of water for 30 minutes), it's suitable for running in typhoons and heavy downpours. The 700-lumen high brightness ensures visibility in rainy conditions, and the hand wave sensor allows instant switching between flashing and constant modes even with wet hands. The charging port cover is also waterproof, ensuring peace of mind after use in the rain.

  • IPX7 full waterproofing for safe use even in typhoons/heavy rain
  • 700lm high brightness and flashing mode maximize visibility in rain
  • Hand wave sensor for comfortable mode switching even with wet hands
  • Type-C charging and lightweight clip-on design for easy attachment to your chest
View details of the IPX7 waterproof running light →

Frequently Asked Questions (FAQ)

Is IPX4 sufficient for rainy season downpours?
IPX4 means it can withstand "splashing water from any direction." It's fine for light rain or drizzle, but there's a risk of water intrusion in heavy or continuous rain during the rainy season. If you plan to run during the rainy season, we recommend IPX5 or higher; for typhoon conditions, choose IPX7.
Can I wash a waterproof running light?
If it's IPX7 rated, you can lightly rinse it with tap water. However, avoid using soap, detergents, or high-pressure washing as they can damage the waterproof gaskets. After washing, open the charging port cover and allow it to dry completely before charging or storing.
Will water get into the charging port of a running light during rain?
Waterproof models with IPX5 or higher are designed to prevent rainwater from entering when the charging port cover is closed. However, waterproof performance is not guaranteed during charging (when the port cover is open). Avoid charging in the rain; always charge indoors.
Is it okay to run when there's lightning?
If there is lightning, stop outdoor running immediately. Lightning strikes are extremely dangerous, regardless of whether you have a running light or not. In case of thunderstorms, we strongly recommend switching to indoor alternative training, such as a treadmill.
Which is better for running in the rain: flashing or constant light mode?
Flashing mode is recommended in rainy weather. When drivers' visibility is reduced due to fogged windshields, flashing lights are more noticeable from a distance than constant lights, strongly asserting the runner's presence. However, switch to constant light mode in areas where you need to check the road surface (puddles, gutters) at your feet.

Summary: Choose IPX7 for night runs during the rainy and typhoon seasons

When choosing a running light for night running in the rain, it's crucial to carefully check the IPX rating. IPX4 for light rain, IPX5 or higher for normal rain, and IPX7 for the rainy and typhoon seasons are basic guidelines for selection.

Additionally, because drivers have reduced visibility of runners in rainy weather, a combination of a high-brightness flashing mode and reflective apparel significantly enhances safety. Aestiquo's clip-on running light (IPX7) offers waterproof performance that allows for safe use in any rainy conditions. We encourage you to use it as a reliable partner for runners who continue to run during the rainy season.

Waterproof Running Light Running in the Rain IPX Waterproof Rating Rainy Season Running Gear Night Run Rain Protection

※The IPX ratings and rain intensity guidelines in this article are for reference only. Actual waterproof performance may vary depending on usage conditions. Please ensure sufficient safety precautions and do not overexert yourself when running outdoors during typhoons or heavy rain.
Back to blog