When to go · Blue Lagoon
Blue Lagoon in July
Good month. Outside the best window (All year – water stays warm; summer offers longer daylight.). Across Iceland: Warmest and busiest; F-roads and Laugavegur trek open; book everything.
Key facts
- Verdict
- Good
- Temperature
- 14°C (57°F)57°F (14°C) / 8°C (46°F)46°F (8°C)
- average high / low
- Rain days
- 7
- Crowds
- High
- Iceland overall
- Prices
- High
- Iceland overall
Verdict
Outside the best window (All year – water stays warm; summer offers longer daylight.). Across Iceland: Warmest and busiest; F-roads and Laugavegur trek open; book everything.
Is another month better than July?
No other month rates higher than July for Blue Lagoon in this guide.
Weather in July
- Blue LagoonHighs around 14 °C (57 °F), lows around 8 °C (46 °F), rain on about 7 daysHighs around 57 °F (14 °C), lows around 46 °F (8 °C), rain on about 7 days
Crowds and prices
- Crowds · Iceland overall
- High
- Prices · Iceland overall
- High
Iceland overall: Warmest and busiest; F-roads and Laugavegur trek open; book everything.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in Blue Lagoon, side by side.
Verdict
Jul: Good
Mar: Good
Daytime high
Jul: 14 °C (57 °F)57 °F (14 °C)
Mar: 4 °C (39 °F)39 °F (4 °C)
Night low
Jul: 8 °C (46 °F)46 °F (8 °C)
Mar: -2 °C (28 °F)28 °F (-2 °C)
Rain days
Jul: 7 (better)
Mar: 12
Crowds
Jul: High
Mar: Medium
Prices
Jul: High
Mar: Medium
Festivals listed
Jul: 0
Mar: 0
July: Outside the best window (All year – water stays warm; summer offers longer daylight.). Across Iceland: Warmest and busiest; F-roads and Laugavegur trek open; book everything.
March: Outside the best window (All year – water stays warm; summer offers longer daylight.). Across Iceland: Balance of light and dark: auroras plus 11–13 h of day; Easter in late March 2027.
Blue Lagoon: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings