Precipitation anomalies in Guinea-Bissau
Guinea-Bissau: Precipitation anomalies was 300.08 millimeters in 2025. ◆ Volatile
Latest (2025)
300.08 millimeters
Change on year
down 39.1%
World rank
15th
of 192 countries
All-time high
798.41 millimeters
in 1958
All-time low
-446.18 millimeters
in 1941
Years of data
86
1940–2025
Precipitation anomalies in Guinea-Bissau, 1940–2025
Source: Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data. Measured in millimeters.
Analysis
The most recent figure for precipitation anomalies in Guinea-Bissau is 300.08 millimeters, measured in 2025.
That represents a change of down 39.1% on the previous year and up 28.8% over ten years.
Over the whole period, precipitation anomalies in Guinea-Bissau peaked at 798.41 millimeters in 1958 and was at its lowest, -446.18 millimeters, in 1941.
Guinea-Bissau ranks 15th of 192 countries on this measure, in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
Precipitation anomalies in Guinea-Bissau, year by year
| Year | millimeters | Change |
|---|---|---|
| 1940 | -6.43 millimeters | — |
| 1941 | -446.18 millimeters | +6835.3% |
| 1942 | 270.07 millimeters | -160.5% |
| 1943 | 476.23 millimeters | +76.3% |
| 1944 | 220.44 millimeters | -53.7% |
| 1945 | 104.89 millimeters | -52.4% |
| 1946 | 149.42 millimeters | +42.5% |
| 1947 | 339.63 millimeters | +127.3% |
| 1948 | 324.94 millimeters | -4.3% |
| 1949 | 160.55 millimeters | -50.6% |
| 1950 | 457.58 millimeters | +185.0% |
| 1951 | 503.71 millimeters | +10.1% |
| 1952 | 432.08 millimeters | -14.2% |
| 1953 | 348.52 millimeters | -19.3% |
| 1954 | 619.37 millimeters | +77.7% |
| 1955 | 544.19 millimeters | -12.1% |
| 1956 | 466.72 millimeters | -14.2% |
| 1957 | 484.95 millimeters | +3.9% |
| 1958 | 798.41 millimeters | +64.6% |
| 1959 | 171.53 millimeters | -78.5% |
| 1960 | 9.91 millimeters | -94.2% |
| 1961 | 409.72 millimeters | +4034.2% |
| 1962 | 297.84 millimeters | -27.3% |
| 1963 | 348.23 millimeters | +16.9% |
| 1964 | 388.02 millimeters | +11.4% |
| 1965 | 263.59 millimeters | -32.1% |
| 1966 | 339 millimeters | +28.6% |
| 1967 | 560.72 millimeters | +65.4% |
| 1968 | -58.17 millimeters | -110.4% |
| 1969 | 507.74 millimeters | -972.9% |
| 1970 | 129.91 millimeters | -74.4% |
| 1971 | 392.61 millimeters | +202.2% |
| 1972 | 360.63 millimeters | -8.1% |
| 1973 | 167.61 millimeters | -53.5% |
| 1974 | 260.51 millimeters | +55.4% |
| 1975 | 283.84 millimeters | +9.0% |
| 1976 | 257.47 millimeters | -9.3% |
| 1977 | -246.16 millimeters | -195.6% |
| 1978 | 283.82 millimeters | -215.3% |
| 1979 | 345.06 millimeters | +21.6% |
| 1980 | -45.79 millimeters | -113.3% |
| 1981 | 101.74 millimeters | -322.2% |
| 1982 | 45.7 millimeters | -55.1% |
| 1983 | -1.6 millimeters | -103.5% |
| 1984 | -35.73 millimeters | +2132.8% |
| 1985 | 32.7 millimeters | -191.5% |
| 1986 | 141.71 millimeters | +333.4% |
| 1987 | 146 millimeters | +3.0% |
| 1988 | 23.89 millimeters | -83.6% |
| 1989 | 59.23 millimeters | +147.9% |
| 1990 | -10.33 millimeters | -117.4% |
| 1991 | 71.16 millimeters | -788.8% |
| 1992 | -26.57 millimeters | -137.3% |
| 1993 | 34.11 millimeters | -228.4% |
| 1994 | 101.1 millimeters | +196.4% |
| 1995 | 18.5 millimeters | -81.7% |
| 1996 | -4.64 millimeters | -125.1% |
| 1997 | -82.43 millimeters | +1675.0% |
| 1998 | -197.18 millimeters | +139.2% |
| 1999 | 165.97 millimeters | -184.2% |
| 2000 | 30.49 millimeters | -81.6% |
| 2001 | 10.8 millimeters | -64.6% |
| 2002 | -348.36 millimeters | -3325.0% |
| 2003 | 129.04 millimeters | -137.0% |
| 2004 | -166.32 millimeters | -228.9% |
| 2005 | -160.42 millimeters | -3.5% |
| 2006 | -245.83 millimeters | +53.2% |
| 2007 | -244.92 millimeters | -0.4% |
| 2008 | 87.19 millimeters | -135.6% |
| 2009 | -53.39 millimeters | -161.2% |
| 2010 | 44.79 millimeters | -183.9% |
| 2011 | -171.08 millimeters | -482.0% |
| 2012 | 115.97 millimeters | -167.8% |
| 2013 | 19.91 millimeters | -82.8% |
| 2014 | -203.63 millimeters | -1122.6% |
| 2015 | 233.03 millimeters | -214.4% |
| 2016 | 152.44 millimeters | -34.6% |
| 2017 | -39.27 millimeters | -125.8% |
| 2018 | 324.34 millimeters | -926.0% |
| 2019 | -53.29 millimeters | -116.4% |
| 2020 | 458.49 millimeters | -960.4% |
| 2021 | -46.98 millimeters | -110.2% |
| 2022 | 191.58 millimeters | -507.8% |
| 2023 | -67.82 millimeters | -135.4% |
| 2024 | 492.45 millimeters | -826.1% |
| 2025 | 300.08 millimeters | -39.1% |
Guinea-Bissau compared with similar countries
- Guinea-Bissau's 300.08 millimeters is above the median for low income countries, which is -67.27 millimeters. (25 countries reporting)
- Guinea-Bissau's 300.08 millimeters is above the median for Sub-Saharan Africa, which is -73.9 millimeters. (48 countries reporting)
Biggest year-on-year movements
Years where Precipitation anomalies in Guinea-Bissau changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1941 | -6835.3% | -6.43 millimeters | -446.18 millimeters |
| 1961 | +4034.2% | 9.91 millimeters | 409.72 millimeters |
| 2002 | -3325.0% | 10.8 millimeters | -348.36 millimeters |
| 1984 | -2132.8% | -1.6 millimeters | -35.73 millimeters |
| 1997 | -1675.0% | -4.64 millimeters | -82.43 millimeters |
| 2014 | -1122.6% | 19.91 millimeters | -203.63 millimeters |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1940s | 159.36 millimeters | -446.18 millimeters | 476.23 millimeters | 10 |
| 1950s | 482.71 millimeters | 171.53 millimeters | 798.41 millimeters | 10 |
| 1960s | 306.66 millimeters | -58.17 millimeters | 560.72 millimeters | 10 |
| 1970s | 223.53 millimeters | -246.16 millimeters | 392.61 millimeters | 10 |
| 1980s | 46.78 millimeters | -45.79 millimeters | 146 millimeters | 10 |
| 1990s | 6.97 millimeters | -197.18 millimeters | 165.97 millimeters | 10 |
| 2000s | -96.17 millimeters | -348.36 millimeters | 129.04 millimeters | 10 |
| 2010s | 42.32 millimeters | -203.63 millimeters | 324.34 millimeters | 10 |
| 2020s | 221.3 millimeters | -67.82 millimeters | 492.45 millimeters | 6 |
Countries ranked near Guinea-Bissau
More climate change data for Guinea-Bissau
- Nutrient nitrogen N (total) — Synthetic fertilizers (Agricultural) 2.69 million kg (2023)
- Emissions from livestock — Emissions (CO2eq) 1,460 kt (2050)
- Emissions from livestock — Emissions (CO2eq) from N2O 527.8 kt (2050)
- Emissions from livestock — Emissions (CO2eq) from CH4 932.22 kt (2050)
- Emissions from livestock — Emissions 1.99 kt (2050)
- Emissions from livestock — Emissions 33.29 kt (2050)
- Emissions from crops — Emissions (CO2eq) 273.82 kt (2050)
- Emissions from crops — Emissions (CO2eq) from N2O 40.84 kt (2050)
- Emissions from crops — Emissions (CO2eq) from CH4 232.99 kt (2050)
- Emissions from crops — Emissions 0.1541 kt (2050)
Frequently asked questions
- What is precipitation anomalies in Guinea-Bissau?
- Precipitation anomalies in Guinea-Bissau was 300.08 millimeters in 2025, according to Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data.
- What is the highest precipitation anomalies recorded in Guinea-Bissau?
- The highest recorded value was 798.41 millimeters in 1958.
- What is the lowest precipitation anomalies recorded in Guinea-Bissau?
- The lowest recorded value was -446.18 millimeters in 1941.
- How does Guinea-Bissau rank for precipitation anomalies?
- Guinea-Bissau ranks 15th out of 192 countries with data for 2025.
- Is precipitation anomalies rising or falling in Guinea-Bissau?
- Over the last ten years it is up 28.8%. The long-run trend across the full record is volatile.
- Where does this Guinea-Bissau data come from?
- The figures come from Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data, published as part of Precipitation anomalies. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 86 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Difference in a specific year's total precipitation—rain and snow—from the 1991–2020 average, measured in millimeters, excluding fog and dew.