Climate Trends in Guinea
Climate trends for Guinea from 0 stations with long records. Also streaks and temperature swings.
Data as of . Last revised (2026-10-12).
Longest Hot, Cold, Wet and Dry Streaks: Guinea
4 lists of 8- In Guinea, the longest run of hot days in a row in the data is 101 days, at Siguiri (Guinea), from 5 February 1947 to 16 May 1947.
- In Guinea, the longest run of dry days in a row in the data is 140 days, at Boke (Guinea), in 1947.
- In Guinea, the longest run of wet days in a row in the data is 75 days, at Conakry (Aero) (Guinea), in 1948.
- In Guinea, the longest run of longest run of nights at or above 25 c in the data is 17 days, at Conakry (Aero) (Guinea), from 24 March 1945 to 9 April 1945.
Longest run of days at or above 35 C
Consecutive days with a daily maximum at or above 35 C (95 F).
| Rank | Station | Country | Length | When |
|---|---|---|---|---|
| 1 | Siguiri | Guinea | 101 days | 5 February to 16 May 1947 |
| 2 | Boke | Guinea | 75 days | 12 February to 27 April 1945 |
| 3 | Kindia | Guinea | 45 days | 7 February to 23 March 1946 |
| 4 | Kankan | Guinea | 44 days | 4 February to 19 March 1947 |
| 5 | Mamou | Guinea | 11 days | 3 to 13 March 1945 |
| 6 | Macenta | Guinea | 8 days | 5 to 12 March 1950 |
| 7 | Labe | Guinea | 2 days | 4 to 5 May 1949 |
| 8 | Conakry (Aero) | Guinea | 1 day | 18 to 18 December 1942 |
Longest dry spell (days under 1 mm of rain), within one year
Consecutive days with less than 1 mm (0.04 in) of rain, the longest run within a year. The dates are not kept, so the list gives the year (within the year).
| Rank | Station | Country | Length | When |
|---|---|---|---|---|
| 1 | Boke | Guinea | 140 days | within 1947 |
| 2 | Conakry (Aero) | Guinea | 132 days | within 1952 |
| 3 | Labe | Guinea | 123 days | within 1950 |
| 4 | Siguiri | Guinea | 114 days | within 1950 |
| 5 | Kankan | Guinea | 91 days | within 1946 |
| 6 | Kindia | Guinea | 89 days | within 1948 |
| 7 | Mamou | Guinea | 88 days | within 1950 |
| 8 | Macenta | Guinea | 44 days | within 1948 |
Longest wet spell (days with 1 mm or more of rain), within one year
Consecutive days with 1 mm (0.04 in) or more of rain, the longest run within a year. The dates are not kept, so the list gives the year (within the year).
| Rank | Station | Country | Length | When |
|---|---|---|---|---|
| 1 | Conakry (Aero) | Guinea | 75 days | within 1948 |
| 2 | Boke | Guinea | 43 days | within 1956 |
| 3 | Mamou | Guinea | 36 days | within 1954 |
| 4 | Kindia | Guinea | 34 days | within 1949 |
| 5 | Macenta | Guinea | 34 days | within 1952 |
| 6 | Labe | Guinea | 21 days | within 1950 |
| 7 | Siguiri | Guinea | 20 days | within 1945 |
| 8 | Kankan | Guinea | 14 days | within 1952 |
Longest run of nights at or above 25 C
| Rank | Station | Country | Length | When |
|---|---|---|---|---|
| 1 | Conakry (Aero) | Guinea | 17 days | 24 March to 9 April 1945 |
| 2 | Siguiri | Guinea | 9 days | 17 to 25 April 1953 |
| 3 | Kankan | Guinea | 3 days | 28 to 30 March 1950 |
| 4 | Boke | Guinea | 3 days | 17 to 19 June 1951 |
| 5 | Macenta | Guinea | 1 day | 1 to 1 January 1948 |
| 6 | Kindia | Guinea | 1 day | 21 to 21 March 1949 |
A run belongs to the year it started in, even when it ran on into the next year. A station appears once per list, with its longest run in a complete year. Dry and wet spells are the longest run within a year. Lists use complete years only, so a long run in a year with gaps in the record is not counted.
Biggest One Day Temperature Swings: Guinea
6 lists of 8- In Guinea, the largest reported one day rise in the daily maximum is 11.7 C (21.1 F), at Kindia (Guinea) on 1 June 1993.
- In Guinea, the largest reported one day drop in the daily maximum is 11.0 C (19.8 F), at Mamou (Guinea) on 12 March 1946.
- In Guinea, the largest reported one day rise in the daily minimum is 10.6 C (19.1 F), at Kankan (Guinea) on 2 March 1947.
- In Guinea, the largest reported one day drop in the daily minimum is 13.6 C (24.5 F), at Macenta (Guinea) on 2 January 1948.
- In Guinea, the largest reported widest range between the high and the low of one day is 27.4 C (49.3 F), at Kankan (Guinea) on 1 March 1947.
- In Guinea, the smallest reported narrowest range between the high and the low of one day is 0.5 C (0.9 F), at Conakry (Aero) (Guinea) on 20 August 1948.
Caveat.Single readings can still be instrument errors that quality control missed. A station with one faulty value can top a list, so read each entry as a reported value, not as a confirmed event.
Biggest one day rise in the daily maximum
The largest increase in the daily maximum temperature from one day to the next. Values are in degrees Celsius with Fahrenheit beside them.
| Rank | Station | Country | Value | Date |
|---|---|---|---|---|
| 1 | Kindia | Guinea | 11.7 C (21.1 F) | 1 June 1993 |
| 2 | Kankan | Guinea | 9.6 C (17.3 F) | 4 April 1949 |
| 3 | Mamou | Guinea | 9.5 C (17.1 F) | 9 March 1958 |
| 4 | Conakry (Aero) | Guinea | 9.4 C (16.9 F) | 3 January 1996 |
| 5 | Labe | Guinea | 9.3 C (16.7 F) | 26 August 1945 |
| 6 | Siguiri | Guinea | 9.3 C (16.7 F) | 19 October 1946 |
| 7 | Boke | Guinea | 9.1 C (16.4 F) | 24 May 1952 |
| 8 | Macenta | Guinea | 8.4 C (15.1 F) | 7 February 1951 |
Biggest one day drop in the daily maximum
The largest decrease in the daily maximum temperature from one day to the next. Values are in degrees Celsius with Fahrenheit beside them.
| Rank | Station | Country | Value | Date |
|---|---|---|---|---|
| 1 | Mamou | Guinea | 11.0 C (19.8 F) | 12 March 1946 |
| 2 | Kankan | Guinea | 10.8 C (19.4 F) | 22 March 1945 |
| 3 | Kindia | Guinea | 10.5 C (18.9 F) | 6 February 1946 |
| 4 | Boke | Guinea | 9.9 C (17.8 F) | 18 May 1954 |
| 5 | Siguiri | Guinea | 9.8 C (17.6 F) | 13 May 1945 |
| 6 | Labe | Guinea | 8.9 C (16.0 F) | 10 November 1947 |
| 7 | Conakry (Aero) | Guinea | 8.5 C (15.3 F) | 10 August 1947 |
| 8 | Macenta | Guinea | 7.8 C (14.0 F) | 4 April 1956 |
Biggest one day rise in the daily minimum
The largest increase in the daily minimum temperature from one day to the next. Values are in degrees Celsius with Fahrenheit beside them.
| Rank | Station | Country | Value | Date |
|---|---|---|---|---|
| 1 | Kankan | Guinea | 10.6 C (19.1 F) | 2 March 1947 |
| 2 | Labe | Guinea | 10.5 C (18.9 F) | 29 December 2024 |
| 3 | Macenta | Guinea | 9.8 C (17.6 F) | 23 December 1945 |
| 4 | Siguiri | Guinea | 8.9 C (16.0 F) | 23 March 1946 |
| 5 | Conakry (Aero) | Guinea | 8.0 C (14.4 F) | 6 March 2016 |
| 6 | Mamou | Guinea | 7.8 C (14.0 F) | 13 March 1945 |
| 7 | Boke | Guinea | 7.5 C (13.5 F) | 14 February 1947 |
| 8 | Kindia | Guinea | 5.8 C (10.4 F) | 21 March 1949 |
Biggest one day drop in the daily minimum
The largest decrease in the daily minimum temperature from one day to the next. Values are in degrees Celsius with Fahrenheit beside them.
| Rank | Station | Country | Value | Date |
|---|---|---|---|---|
| 1 | Macenta | Guinea | 13.6 C (24.5 F) | 2 January 1948 |
| 2 | Labe | Guinea | 10.7 C (19.3 F) | 14 March 1990 |
| 3 | Kankan | Guinea | 10.5 C (18.9 F) | 1 March 1947 |
| 4 | Mamou | Guinea | 9.2 C (16.6 F) | 10 December 1946 |
| 5 | Siguiri | Guinea | 8.4 C (15.1 F) | 2 April 1950 |
| 6 | Conakry (Aero) | Guinea | 7.3 C (13.1 F) | 8 May 2023 |
| 7 | Boke | Guinea | 6.6 C (11.9 F) | 3 February 1955 |
| 8 | Kindia | Guinea | 6.6 C (11.9 F) | 13 December 2023 |
Widest range between the high and the low of one day
The largest difference between the highest and the lowest temperature of the same day. Values are in degrees Celsius with Fahrenheit beside them.
| Rank | Station | Country | Value | Date |
|---|---|---|---|---|
| 1 | Kankan | Guinea | 27.4 C (49.3 F) | 1 March 1947 |
| 2 | Boke | Guinea | 26.9 C (48.4 F) | 1 March 1947 |
| 3 | Siguiri | Guinea | 26.3 C (47.3 F) | 10 February 1947 |
| 4 | Labe | Guinea | 25.5 C (45.9 F) | 22 January 1955 |
| 5 | Macenta | Guinea | 25.4 C (45.7 F) | 11 January 1957 |
| 6 | Mamou | Guinea | 25.3 C (45.5 F) | 9 January 1945 |
| 7 | Kindia | Guinea | 20.2 C (36.4 F) | 1 January 1949 |
| 8 | Conakry (Aero) | Guinea | 17.6 C (31.7 F) | 5 March 2016 |
Narrowest range between the high and the low of one day
The smallest difference between the highest and the lowest temperature of the same day. Values are in degrees Celsius with Fahrenheit beside them.
| Rank | Station | Country | Value | Date |
|---|---|---|---|---|
| 1 | Conakry (Aero) | Guinea | 0.5 C (0.9 F) | 20 August 1948 |
| 2 | Mamou | Guinea | 0.8 C (1.4 F) | 29 August 1948 |
| 3 | Siguiri | Guinea | 0.8 C (1.4 F) | 29 August 1949 |
| 4 | Kindia | Guinea | 1.0 C (1.8 F) | 16 September 1950 |
| 5 | Boke | Guinea | 1.0 C (1.8 F) | 7 August 1958 |
| 6 | Labe | Guinea | 1.1 C (2.0 F) | 12 July 1945 |
| 7 | Macenta | Guinea | 1.7 C (3.1 F) | 3 June 1954 |
| 8 | Kankan | Guinea | 2.3 C (4.1 F) | 14 August 1953 |
Only stations with at least 10 complete years are listed, and a station appears once per list.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-12. Trends and counts are computed by this site from daily station records. The long-record station set is described under each chart.