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Rule Mirror Lake

Furnas - Mirror Lake - Azores

Furnas, Azores, Portugal

Perfectly calm water for flawless reflections

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Atlantic/Azores
mirror-lake weather icon
Next opportunity
Perfect Mirror Reflections
Furnas
Sun, May 31 · 09:00–10:00 · 1h window
Low confidence
35%
💨Wind Speed0.8m/s
mirror-lake weather icon
Perfect Mirror Reflections
Furnas
Mon, Jun 1 · 22:00–02:00
💨Wind Speed:0.8-1m/s
Low

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks calm conditions for reflection photography in the Azores' volcanic crater lakes and sheltered coastal waters. We analyze wind speed, atmospheric stability, and weather patterns to predict when mirror-calm surfaces double the archipelago's dramatic volcanic landscapes.

The Azores' calderas create natural amphitheaters that shelter water from wind—Sete Cidades, Lagoa do Fogo, and Furnas lake sit protected within volcanic rims hundreds of meters high. These crater lakes offer some of the Atlantic's most reliable reflection opportunities, with volcanic slopes, lush vegetation, and often dramatic skies duplicated in still water.

What makes Azores reflection photography special:

  • Twin lake drama - Sete Cidades offers two colors in one caldera—blue Lagoa Azul and green Lagoa Verde create unique mirrored compositions
  • Crater protection - High volcanic rims shelter lakes from ocean winds, creating calm conditions even when coasts are rough
  • Volcanic doubling - Perfect reflections double the drama of crater slopes, vegetation, and sky in protected waters
  • Morning priority - Dawn typically offers the calmest conditions before Atlantic winds strengthen through the day

Sete Cidades provides the iconic shot—when calm, both lakes reflect the caldera walls and sky, with the bridge creating geometric interest. Vista do Rei overlook captures both lakes, while lakeside positions at Sete Cidades village offer intimate reflections. Lagoa do Fogo's higher elevation (575 metres) means it often sits above lower cloud while offering mirror-calm conditions—blue waters perfectly reflecting the barren crater rim. Furnas lake provides reflections combined with atmospheric steam rising in the background. Vila Franca do Campo's sheltered harbour can mirror the volcanic islet offshore. Dawn offers the best chance for calm before winds pick up. Autumn and winter can paradoxically offer better reflection conditions than summer, as storms alternate with calm high-pressure periods.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 79 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Atlantic/Azores
Wind Speed
≤ 1.0m/s
Wind Gusts
≤ 2.0m/s
Precipitation Chance
≤ 10.0%
Visibility
≥ 5000.0m
Sun, May 24
05:002.9m/s4.5m/s24%6400m
06:002.9m/s4.5m/s22%6522m
07:002.7m/s3.9m/s26%6905m
08:002.5m/s3.3m/s13%24134m
09:002.3m/s2.9m/s0%24134m
10:002.3m/s3.2m/s0%24135m
11:002.8m/s3.8m/s0%24134m
12:003.2m/s4.1m/s0%24135m
13:003.5m/s4.5m/s0%24135m
14:003.4m/s4.4m/s0%24135m
15:003.1m/s4m/s0%24134m
16:002.5m/s3.2m/s0%24134m
17:002.2m/s2.9m/s0%24134m
18:002.2m/s2.6m/s0%24134m
19:002m/s2.4m/s6.3%24135m
20:001.8m/s2.2m/s13%24134m
21:001.5m/s1.5m/s19%24135m
22:001.4m/s1.4m/s20%24134m
23:001.5m/s1.5m/s21%24135m
Mon, May 25
24:001.8m/s1.9m/s22%24135m
01:002m/s2m/s17%24135m
02:001.9m/s1.9m/s12%24135m
03:001.9m/s1.9m/s7%24135m
04:001.8m/s1.8m/s4.7%24134m
05:001.6m/s1.6m/s2.3%24134m
06:001.6m/s1.7m/s0%24134m
07:001.8m/s1.9m/s0%24135m
08:001.8m/s2.3m/s0%24134m
09:001.8m/s2.1m/s0%24135m
10:002.2m/s2.3m/s0%24135m
11:002.6m/s2.6m/s0%18904m
12:002.7m/s2.8m/s0%21438m
13:002.8m/s3m/s1.7%20326m
14:002.7m/s2.9m/s3.3%21953m
15:002.7m/s2.8m/s5%24134m
16:002.8m/s2.9m/s3.3%24134m
17:002.9m/s2.9m/s1.7%24135m
18:003m/s3m/s0%24134m
19:002.7m/s2.8m/s6.7%24135m
20:002m/s2.4m/s13%24134m
21:001.5m/s1.8m/s20%24135m
22:001.4m/s1.5m/s30%24134m
23:001.4m/s1.5m/s40%24134m
Tue, May 26
24:001.5m/s1.6m/s50%24135m
01:001.7m/s1.8m/s46%24134m
02:001.7m/s1.8m/s43%24135m
03:001.8m/s2.1m/s39%24134m
04:001.9m/s2.4m/s45%24134m
05:001.9m/s2.8m/s50%24134m
06:002.1m/s3.3m/s56%8518m
07:002.3m/s4.3m/s45%6571m
08:002.7m/s5.7m/s33%23683m
09:003.2m/s6.2m/s22%23117m
10:003.6m/s6.7m/s36%23203m
11:003.9m/s7.4m/s50%21675m
12:004.2m/s7.6m/s64%19422m
13:004.6m/s7.9m/s51%21136m
14:005m/s8m/s38%23515m
15:005.2m/s8.2m/s26%24135m
16:005.5m/s8.5m/s38%24134m
17:005.7m/s8.6m/s51%24135m
18:006.1m/s9.1m/s64%24134m
19:006.9m/s9.9m/s49%24095m
20:007.7m/s11m/s34%24056m
21:008.5m/s12m/s19%24017m
22:009m/s12m/s24%24056m
23:009.6m/s12m/s29%24096m
Wed, May 27
24:0010m/s12m/s34%24135m
01:0010m/s12m/s56%23349m
02:009.9m/s12m/s78%22563m
03:009.8m/s12m/s100%21777m
04:009.8m/s12m/s100%22563m
05:009.7m/s12m/s100%23349m
06:009.7m/s12m/s100%24135m
07:009.4m/s11m/s70%24135m
08:009.2m/s11m/s41%24135m
09:008.9m/s10m/s11%24135m
10:008.9m/s10m/s15%24135m
11:008.8m/s10m/s19%24135m
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

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