Warmest month
- Istanbul
- August · 25.37 °C
- Silhouette Island
- April · 27.97 °C
Istanbul (Türkiye) vs Silhouette Island (Seychelles): Temperature, Rainfall and Sunshine
Reference period: Istanbul 2013–2023 · Silhouette Island 2013–2023
Silhouette Island (Seychelles) has a higher monthly mean temperature than Istanbul (Türkiye) in every month of the year.
Key monthly differences
Coolest month
- Istanbul
- January · 6.76 °C
- Silhouette Island
- July · 25.42 °C
Driest month
- Istanbul
- August · 0.51 mm/day
- Silhouette Island
- July · 2.18 mm/day
Sunniest month
- Istanbul
- July · 13.27 hours/day
- Silhouette Island
- October · 10.85 hours/day
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Climate comparison questions
When are the temperatures most similar and most different?
The smallest difference in monthly mean temperature is 0.08 °C (August); the largest is 19.97 °C (January).
How much do temperatures vary across the year?
The difference between the warmest and coolest monthly means is 18.61 °C in Istanbul (Türkiye) and 2.55 °C in Silhouette Island (Seychelles). This describes seasonal variation, not the range between daytime highs and nighttime lows.
Which location has more rainfall?
Istanbul (Türkiye) has a higher daily rainfall average in 0 months and Silhouette Island (Seychelles) in 12; 0 months are equal at the displayed precision. Rainfall amounts do not tell us how many days it rains.
Which location has more sunshine?
Istanbul (Türkiye) has more average sunshine hours per day in 5 months and Silhouette Island (Seychelles) in 7; 0 months are equal at the displayed precision. Sunshine duration is different from daylight duration.
Climate data notes
Show data and calculation
Daily values are averaged separately for each calendar month over the saved reference period. Temperatures are daily means, not daytime highs. Rainfall is an average daily amount, not a monthly total; sunshine is average hours per day. These historical averages are not a weather forecast. Each location’s reference period is listed below and may differ.
Mean of the 12 monthly averages
Monthly climate data
Difference: Silhouette Island (Seychelles) minus Istanbul (Türkiye)
Temperature °C
| Month | Istanbul | Silhouette Island | +/- |
|---|---|---|---|
| Jan | 6.76 | 26.72 | +19.97 |
| Feb | 7.56 | 27.29 | +19.74 |
| Mar | 8.80 | 27.83 | +19.03 |
| Apr | 12.24 | 27.97 | +15.73 |
| May | 17.35 | 27.56 | +10.21 |
| Jun | 21.86 | 26.49 | +4.63 |
| Jul | 24.72 | 25.42 | +0.70 |
| Aug | 25.37 | 25.45 | +0.08 |
| Sep | 21.84 | 26.03 | +4.19 |
| Oct | 16.77 | 26.68 | +9.91 |
| Nov | 13.25 | 26.88 | +13.63 |
| Dec | 8.94 | 26.73 | +17.79 |
| Annual mean | 15.45 | 26.75 | +11.30 |
Average sunshine (hours/day)
| Month | Istanbul | Silhouette Island | +/- |
|---|---|---|---|
| Jan | 5.41 | 9.64 | +4.23 |
| Feb | 6.61 | 10.18 | +3.57 |
| Mar | 7.64 | 10.53 | +2.89 |
| Apr | 10.07 | 10.50 | +0.43 |
| May | 11.58 | 9.93 | −1.65 |
| Jun | 12.84 | 10.14 | −2.70 |
| Jul | 13.27 | 10.46 | −2.82 |
| Aug | 12.13 | 10.49 | −1.64 |
| Sep | 10.56 | 10.32 | −0.25 |
| Oct | 7.97 | 10.85 | +2.88 |
| Nov | 6.52 | 10.66 | +4.14 |
| Dec | 5.46 | 10.20 | +4.73 |
| Annual mean | 9.17 | 10.33 | +1.15 |
Average daily rainfall (mm/day)
| Month | Istanbul | Silhouette Island | +/- |
|---|---|---|---|
| Jan | 2.75 | 8.14 | +5.39 |
| Feb | 2.27 | 5.59 | +3.32 |
| Mar | 2.41 | 3.35 | +0.94 |
| Apr | 1.70 | 4.20 | +2.51 |
| May | 1.52 | 6.30 | +4.78 |
| Jun | 1.49 | 3.12 | +1.63 |
| Jul | 0.70 | 2.18 | +1.48 |
| Aug | 0.51 | 2.33 | +1.82 |
| Sep | 1.56 | 5.47 | +3.91 |
| Oct | 2.07 | 4.19 | +2.12 |
| Nov | 2.68 | 6.63 | +3.95 |
| Dec | 2.51 | 9.47 | +6.96 |
| Annual mean | 1.85 | 5.08 | +3.23 |
Snow (mm)
| Month | Istanbul | Silhouette Island | +/- |
|---|---|---|---|
| Jan | 3.78 | 0.00 | −3.78 |
| Feb | 2.13 | 0.00 | −2.13 |
| Mar | 0.43 | 0.00 | −0.43 |
| Apr | 0.00 | 0.00 | 0.00 |
| May | 0.00 | 0.00 | 0.00 |
| Jun | 0.00 | 0.00 | 0.00 |
| Jul | 0.00 | 0.00 | 0.00 |
| Aug | 0.00 | 0.00 | 0.00 |
| Sep | 0.00 | 0.00 | 0.00 |
| Oct | 0.00 | 0.00 | 0.00 |
| Nov | 0.06 | 0.00 | −0.06 |
| Dec | 1.20 | 0.00 | −1.20 |
| Annual mean | 0.63 | 0.00 | −0.63 |
