There’s something almost surreal about fireflies drifting through a dark forest clearing. Tiny floating lanterns. Fleeting sparks of summer. And somehow, when there’s a soft rain falling, the entire world feels even more cinematic.
Unfortunately for photographers, firefly season often
arrives alongside humidity, fog, mist… and endless rain. (At least here in
Pennsylvania lately.)
The good news? You can absolutely photograph fireflies in
both dry and rainy conditions — and rain can actually add atmosphere,
reflections, depth, and mood to your images if you work with it instead of
against it.
Here are some of my favorite tips for photographing
fireflies — with and without the rain.
Scout Your Location Before Dark
Fireflies usually gather in:
Woodland edges
Broadleaf forests
Meadows
Wet areas near streams or ponds
Tall grass clearings
If possible, visit your location before sunset to:
Check footing and trails
Set up safely
Identify compositions
Avoid fumbling in darkness
Rainy nights make this even more important because mud,
roots, and slick leaves become hazards very quickly.
Use a Tripod (Always)
Firefly photography almost always requires long exposures.
Even if you have excellent image stabilization, a tripod is
essential for:
Sharp trees and landscape detail
Layered firefly trails
Multiple stacked exposures
Lower ISO noise
A sturdy tripod matters even more in wet weather where soft
ground can shift underneath lightweight setups.
Rain Can Actually Improve the Mood
Most photographers pack up when the rain starts.
But light rain can create:
Reflective foliage
Atmospheric haze
Depth from falling droplets
Softer contrast
More cinematic light
A gentle straight-down rain in a forest can become part of
the image itself — especially when illuminated by ambient sky glow or distant
artificial light.
The key is light rain.
Heavy downpours usually obscure fireflies and create
excessive blur and lens spotting.
Protect Your Camera Gear
You do not need expensive specialty rain gear.
Simple solutions work beautifully:
Small umbrella clamped to tripod
Compact tarp over camera
Rain sleeve
Microfiber cloths in your pocket
Lens hood to reduce raindrops on glass
One of the simplest setups is a small umbrella angled over
the tripod and camera while you stand beside it adjusting settings.
It may not look glamorous — but it works.
Camera Settings for Fireflies
A good starting point:
Mode: Manual
Focus: Manual focus
ISO: 800–3200
Aperture: f/2.8 – f/5.6
Shutter: 10–30 seconds
Experiment depending on:
Firefly activity
Ambient light
Rain intensity
Whether you want trails or floating points
For glowing “dots”
Use shorter exposures.
For magical drifting streaks
Use longer exposures or stack multiple frames.
Focus Before It Gets Fully Dark
Autofocus struggles badly in low-light woodland
environments.
Before darkness fully falls:
Focus on a tree trunk
Focus on your intended foreground
Switch lens to manual focus
Leave it there
This prevents the camera from endlessly hunting once the
fireflies appear.
Fireflies Often Peak After Humid Rain
Warm humid evenings after rain can produce incredible
activity.
Some of the best conditions include:
Warm temperatures
High humidity
Calm winds
Misty air
Wet vegetation
Ironically, the nights photographers often avoid can become
the most magical.
Include the Environment
A common mistake is photographing only the fireflies.
Instead, include:
Tree silhouettes
Paths
Ferns
Wet leaves
Reflections
Fog
A human figure for scale
Fireflies become far more powerful when they exist inside a
scene rather than floating in empty darkness.
Watch for Lens Fogging
Humidity is often a bigger issue than rain itself.
To reduce fogging:
Keep gear acclimated outdoors
Avoid opening bags constantly
Use lens cloths frequently
Store silica packs in camera bag
Moving repeatedly between air conditioning and humid
outdoors can instantly fog lenses.
Respect the Fireflies
Avoid:
Flash photography directly into swarms
Trampling habitat
Excessive bright lights
Catching large numbers in jars
Firefly populations are declining in many regions due to
habitat loss and artificial light pollution.
Photograph gently and leave the environment as you found it.
Final Thoughts
Some of my favorite images happen when conditions are
imperfect.
A little rain. Fog drifting through trees. Muddy boots. Damp
sleeves. Fireflies glowing against wet leaves.
Those nights feel less like photography and more like
stepping briefly into another world.
And honestly? Sometimes the rain is exactly what the image
needed.
