Cuba · Weekly
Week 39, 2026 (21–27 September)
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1 Key messages and climate synopsis
Source: NOAA CPC / PSL
Source: NOAA CPC / PSL
2 Global and regional climate drivers
Sea-surface temperature anomaly in the Niño regions (°C)
| Region | Anomaly (°C) | Change from preceding period (°C) |
|---|---|---|
| Niño 1+2 | 4.7 | 0.1 |
| Niño 3 | 3.9 | 0.1 |
| Niño 3.4 | 3.1 | 0.1 |
| Niño 4 | 1.1 | 0.1 |
Weekly mean (OISST v2.1)
Source: NOAA CPC
El Niño conditions of strong intensity: the Oceanic Niño Index (ONI) for JJA 2026 was +1.8 °C.
Source: NOAA CPC
Monthly Niño 3.4 anomaly, last 24 months (°C)
Source: NOAA CPC
MJO phase diagram (real-time OMI)
Source: NOAA PSL
The Niño 3.4 anomaly was +3.10 °C (+0.10 °C relative to the preceding period).
The MJO was weak or inactive (amplitude below 1 on every day; mean 0.7).
3 Precipitation
Source: NOAA CPC / PSL
Accumulated precipitation
Source: NOAA CPC / PSL
Percent of normal precipitation (1991–2020)
Source: NOAA CPC / PSL
Precipitation by region
| Region | Total (mm) | Normal (mm) | Difference (%) | Category |
|---|---|---|---|---|
| Western Cuba | 16.3 | 32.2 | −49.2 | Below normal |
| Central Cuba | 14.3 | 33.5 | −57.4 | Below normal |
| Eastern Cuba | 52.5 | 24.8 | 111.8 | Much above normal |
Source: NOAA CPC / PSL
Largest 24-hour rainfall at stations
| Station | State | Max 24 h rainfall (mm) | Date |
|---|---|---|---|
| Guantanamo Bay Nas | Guantánamo | 14.3 | 2026-09-26 |
Source: NOAA NCEI
Daily national mean precipitation
Source: NOAA CPC / PSL
National accumulated precipitation was 27.5 mm, 91% of the 1991–2020 average (30.2 mm), category “Near normal”. It was the 26th driest week 39 in the 1979–2026 series.
The region with the highest percentage of normal was Eastern Cuba (212%) and the lowest was Central Cuba (43%).
The largest daily grid-cell total was estimated on 25 September in Guantánamo (72.8 mm).
Source: NOAA CPC / PSL
4 Temperature
Source: NOAA CPC / PSL
Mean temperature
Source: NOAA CPC / PSL
Mean temperature anomaly (1991–2020)
Source: NOAA CPC / PSL
Stations with the largest positive anomaly
| Region | State | Station | Altitude (m) | Anomaly (°C) |
|---|---|---|---|---|
| Eastern Cuba | Guantánamo | Guantanamo Bay Nas | 16.0 | 0.2 |
Source: NOAA NCEI
The national mean temperature was 27.1 °C, 0.2 °C below the 1991–2020 average (27.4 °C), category “Normal”. It was the 23rd coldest week 39 in the 1979–2026 series (tied with 1995, 1998, 2019).
By region, the largest anomaly was in Eastern Cuba (+0.2 °C) and the smallest in Central Cuba (−0.5 °C).
Source: NOAA CPC / PSL
Source: NOAA CPC / PSL
Maximum temperature anomaly (1991–2020)
Source: NOAA CPC / PSL
Daily national maximum temperature
Source: NOAA CPC / PSL
The national maximum temperature was 30.6 °C, 0.7 °C below the 1991–2020 average (31.4 °C), category “Slightly below normal”. It was the 18th coldest week 39 in the 1979–2026 series (tied with 2004, 2007).
By region, the largest anomaly was in Western Cuba (−0.4 °C) and the smallest in Central Cuba (−1.0 °C).
Source: NOAA CPC / PSL
Source: NOAA CPC / PSL
Minimum temperature anomaly (1991–2020)
Source: NOAA CPC / PSL
Daily national minimum temperature
Source: NOAA CPC / PSL
The national minimum temperature was 23.7 °C, 0.3 °C above the 1991–2020 average (23.4 °C), category “Normal”. It was the 12th warmest week 39 in the 1979–2026 series.
By region, the largest anomaly was in Eastern Cuba (+1.1 °C) and the smallest in Western Cuba (−0.4 °C).
Source: NOAA CPC / PSL
5 Climate extremes and records
Source: NOAA NCEI
Highest maximum temperature by state
| State | Station | Temperature (°C) | Date |
|---|---|---|---|
| Guantánamo | Guantanamo Bay Nas | 32.2 | 2026-09-22 |
Source: NOAA NCEI
Lowest minimum temperature by state
| State | Station | Temperature (°C) | Date |
|---|---|---|---|
| Guantánamo | Guantanamo Bay Nas | 24.4 | 2026-09-21 |
Source: NOAA NCEI
Climate-extremes indices (national mean)
| Index | Description | Value | Normal | Difference | Unit |
|---|---|---|---|---|---|
| TX90p | Warm days (Tmax > 90th percentile) | 9.9 | 10.0 | −0.1 | % |
| TN90p | Warm nights (Tmin > 90th percentile) | 17.9 | 10.0 | 7.9 | % |
| TX10p | Cool days (Tmax < 10th percentile) | 24.8 | 10.0 | 14.8 | % |
| TN10p | Cold nights (Tmin < 10th percentile) | 6.6 | 10.0 | −3.4 | % |
| FD | Frost days (Tmin < 0 °C) | 0.0 | 0.0 | 0.0 | d |
| SU | Summer days (Tmax > 25 °C) | 7.0 | 7.0 | 0.0 | d |
| TR | Tropical nights (Tmin > 20 °C) | 7.0 | 7.0 | 0.0 | d |
| WSDI | Warm spell days (≥ 6 days) | 0.0 | — | — | d |
| CSDI | Cold spell days (≥ 6 days) | 0.0 | — | — | d |
| Rx1day | Maximum 1-day precipitation | 21.9 | 16.2 | 5.7 | mm |
| Rx5day | Maximum 5-day precipitation | 27.4 | 27.9 | −0.5 | mm |
| CDD | Consecutive dry days (< 1 mm) | 4.4 | 3.5 | 0.9 | d |
| CWD | Consecutive wet days (≥ 1 mm) | 1.1 | 2.1 | −1.0 | d |
Percentile indices relative to calendar-day percentiles of 1991–2020 (5-day window); counts and maxima averaged over the country's grid cells.
Source: NOAA CPC / PSL
6 Drought
The SPI is computed from monthly totals; see the latest monthly report (SPI).
7 Severe weather and notable events
Notable events
| Dates | Type | Details |
|---|---|---|
| 2026-04-21 – 2026-10-09 | Drought | GDACS Orange alert: Drought in The Bahamas, Belize, Costa Rica, Cuba, Dominican Republic, Guatemala, Honduras, Haiti, Mexico, Nicaragua, El Salvador. |
GDACS alerts and station rainfall of 150 mm or more in 24 hours (after quality control).
Source: GDACS
No tropical cyclone came within 300 km of the country.
9 Outlook
Weekly reports do not include a forecast yet; see the outlook in the latest monthly report (NMME seasonal forecast).
11 Glossary, methodology and sources
Anomaly: difference between the observed value and its 1991–2020 normal. Percent of normal: observed total divided by the normal, times 100. Station record: most extreme daily value for the same month in all earlier years of record (at least 20 years).
Temperature: CPC_TEMP (0.5° daily grid); mean temperature is (Tmax + Tmin)/2. Precipitation: CPC. National, regional and state averages are weighted by the area of each grid cell inside each polygon. Normals refer to 1991-2020; ranks compare values rounded to one decimal. Stations: GHCN-Daily (NOAA NCEI); values flagged by its quality control are discarded, as are daily values more than 5 robust standard deviations from the station median and variables whose monthly anomaly differs by more than 3 °C from the gridded analysis. Period means require at least 80% of days with data and station normals at least 20 complete years. This report is generated automatically and does not replace official information from the national meteorological service.
| Source | Product | License | Citation |
|---|---|---|---|
| NOAA CPC | ONI, Niño-region SST indices (OISST v2.1), NAO and AO | Public domain (NOAA) | NOAA Climate Prediction Center climate indices. |
| NOAA CPC / PSL | CPC Global Unified Gauge-Based Analysis of Daily Precipitation, 0.5° | Public domain (NOAA) | CPC Global Unified Precipitation data provided by NOAA PSL, Boulder, CO, USA. |
| NOAA CPC / PSL | CPC Global Unified Temperature, daily 0.5° | Public domain (NOAA) | CPC Global Unified Temperature data provided by NOAA PSL, Boulder, CO, USA. |
| GDACS | Global Disaster Alert and Coordination System event list | See provider terms | — |
| NOAA NCEI | GHCN-Daily | Public domain (NOAA) | Menne et al. (2012), J. Atmos. Oceanic Technol., doi:10.1175/JTECH-D-11-00103.1 |
| NOAA NCEI | IBTrACS v04r01 tropical-cyclone best tracks | Public domain (NOAA) | Knapp et al. (2010), Bull. Amer. Meteor. Soc., doi:10.1175/2009BAMS2755.1 |
| NOAA PSL | Real-time OLR MJO Index (ROMI) | Public domain (NOAA) | Kiladis et al. (2014), Mon. Wea. Rev., doi:10.1175/MWR-D-13-00301.1 |
| geoBoundaries | geoBoundaries gbOpen (OpenStreetMap, Wambacher) | Open Data Commons Open Database License 1.0 | — |
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