Preparing for Iceland Weather in Katla UNESCO Global Geopark

If there is one thing every visitor quickly learns, it’s that Iceland weather is absolutely part of the adventure!  In fact, within Katla UNESCO Global Geopark, weather doesn’t just shape your day. it has shaped the entire landscape.  From volcanoes, glaciers, black sand beaches, moss-covered lava fields and dramatic waterfalls... They all exist because of the powerful interaction between fire and ice!  Now, understanding Iceland weather isn’t about fear, it’s actually about preparation, awareness and respect.

Here’s what you need to know before exploring Katla Geopark...

Why Iceland Weather Is So Unique

Iceland sits where Arctic and North Atlantic weather systems collide.  To illustrate, it is often referred to as the "Gulf Stream."  Which means there are milder temperatures in the idea of not huge lows and not huge highs.  Iceland weather typically stays between 0° - 15 Celsius (0-59°F).  Also means you can easily experience 4 seasons in one day too!  For example, like...

• Rapidly changing conditions
• Strong coastal winds (even gale force)
• Sudden rain showers
• Bright sunshine followed by fog
• Temperature swings within hours or minutes

In Katla Geopark, glaciers meet ocean and volcanic black sands.  These contrasts create microclimates.  For example, you may drive from sunshine into heavy rain within minutes and sun the next.  Basically, always expect change!

Iceland's Golden Rule: Dress in Layers

Next, when planning for Iceland weather, layers are everything, truly!  Because in layering up you'll combat the ever-changing conditions and stay comfortable.

Base Layers

• Moisture-wicking thermal (ideally wool or synthetic worst case).  Think: Fast drying.
• Avoid cotton!  Why?  It holds moisture and chills the body.

Mid Layers

• Fleece or insulated jacket (think thin puffer jacket).
• Objective: Provides extra warmth without bulk.

Outer Layer

• Waterproof AND windproof jacket
• Waterproof trousers (especially in waterfall areas)
• Parka if visiting Iceland during Wintertime.

Be aware, even in summer, wind can feel cold.  Even in winter, you may feel warm while hiking.  Layers allow you to adapt to the weather and the day.

Wind: The Weather Factor Visitors Underestimate

When people think of Iceland weather, they often focus on time of year or temperature.  However, in reality, wind is the biggest factor and happens year round!

In Katla Global Geopark:

• Gusts can exceed 20–30+ m/s during storms.
• Car doors can be damaged or ripped off if opened carelessly.  Tip: Always open car doors firmly with two hands.
• Coastal cliffs and beaches become dangerous in high winds. Additional Tip: Check conditions before walking near cliff edges or black sand beaches.  Heed all warning lights and signs too.
• Wind chill can make mild temperatures feel freezing or significantly lower.

Rain is part of Iceland weather year-round.  It may not rain all day, but it can and short bursts are common.

Especially near:

• Seljalandsfoss
• Skógafoss
• Town of Vik
• Coastal Areas
• Glacial Areas

Waterproof boots with good grip are strongly recommended and micro-spikes during winter months.  Likely because trails can become slippery quickly.  Please checkout our Geohazards section of our website for more information.

Iceland Weather by Season

If you've taken advantage of our Katla Geopark Self Drive Digital Download, you might want to know when is the best time for you to come?  Frankly, it depend on you and your Iceland activity list!

Summer (June–August)

• 10–15°C average
• Midnight sun
• Frequent wind
• Occasional heavy showers

Best for long road trips and hiking... But still bring waterproof layers!

Autumn (September–October)

• Fewer crowds
• Increasing storms
• Northern lights begin

Weather becomes more unpredictable during these months.

Winter (November–March)

• 0 to -5°C average (often milder than expected)
• Snow, ice, and strong storms possible
• Limited daylight
• Road closures can occur

Check road and Iceland weather conditions daily.

Spring (April–May)

• Snowmelt season
• Changing road conditions
• Quieter travel period

Always Check the Forecast

Before heading out each day in Katla Geopark and beyond, be sure to check:

• Icelandic Meteorological Office (vedur.is)
• Road Conditions (road.is)
• Safe Travel Iceland Alerts 
• Northern Lights Forecast

In conclusion, Iceland weather can change quickly, especially in exposed volcanic plains and coastal areas.

Practical Packing Checklist for Iceland Weather

Depending on how many days your visit will be and what you will be doing activity wise, will determine how you pack your suitcase.  Here are a few ideas...

• Waterproof jacket (with hood)
• Waterproof trousers
• Thermal base layers
• Insulated mid-layer
• Hat and gloves (even in summer)
• Sturdy waterproof hiking boots
• Sunglasses (yes, even in winter as snow glare is strong)
• Swimsuit (for hot springs!)
• Sunscreen
• Extra socks
• Day adventure attire versus nighttime / dinner attire
• Small backpack or daypack

Embrace the Experience

Lastly, Iceland weather is not something to “endure.”  It is part of what makes Katla UNESCO Global Geopark extraordinary.  The dramatic skies, moving clouds, mist over waterfalls and shifting light across lava fields create unforgettable moments.

With preparation, flexibility and respect, Iceland weather becomes part of your travel story, not a disruption to it.  But before you explore, check the forecast, dress smartly and allow extra time in your itinerary!  ...and make sure you checkout our Katla Geopark Partners and Citizen Science Tours!