Iceland
Reykjavík in April: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Reykjavík in April is climatically mixed. The average daily high is around 5 °C, and the sea is about 6 °C. With about 17 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
19/100 · #5
Warmth
#7
Dryness
#4
Sun
#4
Sea warmth
#9
Published best categories: none
Reykjavík · AprilPhoto: rheins · CC BY 3.0Climate facts
- Average high
- 5 °C
- Average low
- 1 °C
- Sea
- 6 °C
- Rainy days (est.)
- 17 rainy days (est.)
- Sun (est.)
- 5 h/day
- Humidity
- 86 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| March | 2 | -2 | 20 | 157 | 2.3 | 89 | 4.3 | 5 | 13 |
| April (selected) | 5 | 1 | 17 | 108 | 4.6 | 86 | 3.7 | 6 | 19 |
| May | 8 | 3 | 16 | 100 | 6.0 | 83 | 3.0 | 7 | 24 |
How do the previous and next months compare?
Baseline: April (19/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| March | -6 | -2.6 °C | -2.1 °C | +2.5 | +48.3 mm | -2.3 h | +3.1 % | +0.6 m/s | -0.7 °C |
| May | +5 | +3.2 °C | +2.8 °C | -1.5 | -8.2 mm | +1.4 h | -2.8 % | -0.8 m/s | +1.7 °C |
All twelve months in context
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Where to stay in Reykjavík
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Useful next decisions
Frequently asked questions
How warm is Reykjavík in April?
The average daily high is around 5 °C, with an average daily low of about 1 °C.
Can you swim in Reykjavík in April?
The sea is about 6 °C (cold).
Does it rain a lot in Reykjavík in April?
The curated estimate is about 17 rainy days per month, not a directly measured long-term average. Total precipitation averages around 108 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Reykjavík?
No month in Reykjavík reaches the threshold for a clear recommendation in the climate score; the month comparison above shows the differences.