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This page provides an overview of regional forecast skill for the SON 2025 period. Forecast scores are updated automatically every week throughout the competitive period. The current data includes forecasts initialized between Thursday 14th August 2025 and Thursday 21st August 2025 (inclusive). For a detailed description of the outputs, please refer to the section's overview .
Regional skill score files
All regional RPSSs are available to download via the following link:
SON 2025 Regional RPSSs (Excel format)
Regional scores for the top 10 teams of global, period-aggregated, variable-averaged RPSSs
Forecast window 1 (days 19 to 25)
Team name Team rank Model name Model rank Global Tropics NHem. ExTro. SHem. ExTro. NHem. Polar SHem. Polar Europe N. Amer. S. Amer. Africa Asia Oceania CMAandFDU 1 FengshunAdjust 1 0.086 0.169 0.023 0.006 0.002 -0.059 0.036 0.006 0.15 0.119 0.105 0.13 CMAandFDU 1 FengshunHybrid 2 0.072 0.132 0.026 -0.0 0.028 -0.033 0.038 0.008 0.035 0.123 0.116 0.057 CMAandFDU 1 Fengshun 10 0.016 0.055 -0.006 -0.075 0.032 -0.067 0.021 -0.029 0.02 -0.037 0.083 0.06 MicroEnsemble 2 StillLearning 3 0.072 0.104 0.046 0.027 0.03 0.024 0.067 -0.01 0.038 0.096 0.105 0.071 MicroEnsemble 2 MicroDuet 4 0.072 0.105 0.041 0.026 0.031 0.03 0.061 -0.0 0.037 0.063 0.106 0.077 MicroEnsemble 2 Huracan 9 0.036 0.034 0.039 0.006 0.018 0.022 0.056 -0.009 -0.038 -0.035 0.083 0.033 AIFS 3 AIFSgaia 5 0.065 0.097 0.032 0.011 0.043 -0.009 0.079 -0.069 0.03 0.094 0.113 0.037 AIFS 3 AIFShera 6 0.065 0.082 0.044 0.001 0.032 0.01 0.077 -0.053 0.083 0.045 0.106 0.078 AIFS 3 AIFSthalassa 8 0.048 0.082 0.013 -0.038 0.028 -0.055 0.026 -0.064 0.005 0.067 0.096 -0.024 LP 4 LPM 7 0.061 0.08 0.055 0.038 0.015 -0.003 0.065 -0.002 0.033 0.041 0.103 0.031 KITKangu 5 KanguPlusPlus 11 0.0 -0.0 -0.0 -0.0 0.0 0.0 0.0 0.0 -0.0 -0.0 0.0 -0.0 KITKangu 5 KanguParametricPrediction 11 0.0 -0.0 -0.0 -0.0 0.0 0.0 0.0 0.0 -0.0 -0.0 0.0 -0.0 scienceAI 5 findforecast 11 0.0 -0.0 -0.0 -0.0 0.0 0.0 0.0 0.0 -0.0 -0.0 0.0 -0.0 scienceAI 5 zephyr 11 0.0 -0.0 -0.0 -0.0 0.0 0.0 0.0 0.0 -0.0 -0.0 0.0 -0.0 scienceAI 5 ngcm 11 0.0 -0.0 -0.0 -0.0 0.0 0.0 0.0 0.0 -0.0 -0.0 0.0 -0.0 KITKangu 5 KanguS2SEasyUQ 38 -1.28 -1.373 -1.141 -1.284 -1.169 -1.235 -1.095 -1.036 -1.403 -1.37 -1.222 -1.826 CliMA 7 CliMAWeather2 16 -0.075 -0.092 -0.09 -0.192 -0.038 0.046 -0.066 -0.109 -0.144 -0.159 -0.065 -0.012 CliMA 7 CliMAWeather 17 -0.078 -0.095 -0.095 -0.197 -0.042 0.045 -0.069 -0.113 -0.143 -0.163 -0.07 -0.019 WindBorne 8 WeatherMesh 18 -0.179 -0.128 -0.237 -0.189 -0.207 -0.337 -0.244 -0.244 -0.139 -0.196 -0.176 -0.183 FengWuW2S 9 FengWu2 19 -0.275 -0.172 -0.467 -0.154 -0.396 -0.224 -0.509 -0.109 -0.056 -0.344 -0.564 -0.245 FengWuW2S 9 FengWu 22 -0.305 -0.381 -0.323 -0.236 -0.181 -0.103 -0.308 -0.199 -0.416 -0.512 -0.412 -0.3 NordicS2S 10 NordicS2S1 20 -0.285 -0.208 -0.372 -0.324 -0.185 -0.39 -0.241 -0.326 -0.226 -0.257 -0.198 -0.399 NordicS2S 10 NordicS2S3 23 -0.421 -0.397 -0.506 -0.378 -0.379 -0.414 -0.409 -0.445 -0.516 -0.42 -0.387 -0.54 NordicS2S 10 NordicS2S2 29 -0.573 -0.634 -0.611 -0.445 -0.418 -0.387 -0.308 -0.715 -0.82 -0.534 -0.535 -0.66
Forecast window 2 (days 26 to 32)
Team name Team rank Model name Model rank Global Tropics NHem. ExTro. SHem. ExTro. NHem. Polar SHem. Polar Europe N. Amer. S. Amer. Africa Asia Oceania MicroEnsemble 1 StillLearning 1 0.054 0.094 0.026 0.033 0.044 0.001 0.048 0.026 0.089 0.068 0.048 0.123 MicroEnsemble 1 MicroDuet 2 0.052 0.087 0.02 0.053 0.039 0.019 0.038 0.047 0.101 0.034 0.043 0.107 MicroEnsemble 1 Huracan 7 0.016 0.022 0.002 0.057 0.031 -0.005 0.032 0.04 0.047 -0.052 0.0 0.065 CMAandFDU 2 FengshunHybrid 3 0.048 0.075 0.036 0.022 0.009 0.025 0.045 0.03 0.045 0.063 0.056 0.069 CMAandFDU 2 FengshunAdjust 4 0.046 0.08 0.035 0.019 0.017 0.014 0.039 0.048 0.065 0.051 0.053 0.131 CMAandFDU 2 Fengshun 9 0.005 0.018 0.01 0.016 0.013 -0.031 0.02 -0.017 -0.002 -0.014 0.032 0.069 LP 3 LPM 5 0.036 0.065 0.018 0.018 0.032 -0.026 0.024 0.047 0.051 0.031 0.043 0.058 AIFS 4 AIFSgaia 6 0.025 0.046 0.004 0.024 0.012 0.009 0.031 -0.004 0.083 0.016 0.018 0.033 AIFS 4 AIFShera 8 0.012 0.023 -0.004 0.023 0.015 -0.013 0.036 -0.038 0.075 -0.003 0.007 0.051 AIFS 4 AIFSthalassa 10 0.002 -0.01 0.007 -0.004 0.012 0.012 0.02 0.002 0.011 -0.061 0.009 -0.011 KITKangu 5 KanguPlusPlus 11 0.0 -0.0 -0.0 -0.0 0.0 0.0 0.0 0.0 -0.0 -0.0 0.0 -0.0 KITKangu 5 KanguParametricPrediction 11 0.0 -0.0 -0.0 -0.0 0.0 0.0 0.0 0.0 -0.0 -0.0 0.0 -0.0 scienceAI 5 findforecast 11 0.0 -0.0 -0.0 -0.0 0.0 0.0 0.0 0.0 -0.0 -0.0 0.0 -0.0 scienceAI 5 zephyr 11 0.0 -0.0 -0.0 -0.0 0.0 0.0 0.0 0.0 -0.0 -0.0 0.0 -0.0 scienceAI 5 ngcm 11 0.0 -0.0 -0.0 -0.0 0.0 0.0 0.0 0.0 -0.0 -0.0 0.0 -0.0 KITKangu 5 KanguS2SEasyUQ 38 -1.419 -1.522 -1.373 -1.09 -1.149 -1.365 -1.237 -1.406 -1.511 -1.626 -1.306 -1.299 CliMA 7 CliMAWeather 16 -0.173 -0.221 -0.203 -0.181 -0.094 -0.026 -0.101 -0.103 -0.155 -0.391 -0.247 -0.106 CliMA 7 CliMAWeather2 17 -0.181 -0.227 -0.214 -0.192 -0.1 -0.033 -0.113 -0.111 -0.171 -0.408 -0.251 -0.105 NordicS2S 8 NordicS2S1 18 -0.25 -0.279 -0.192 -0.2 -0.153 -0.319 -0.176 -0.146 -0.284 -0.444 -0.195 -0.228 NordicS2S 8 NordicS2S3 24 -0.473 -0.701 -0.245 -0.14 -0.275 -0.396 -0.214 -0.431 -0.649 -0.821 -0.338 -0.485 NordicS2S 8 NordicS2S2 29 -0.581 -0.69 -0.602 -0.498 -0.299 -0.355 -0.416 -0.628 -0.671 -0.849 -0.465 -0.378 FengWuW2S 9 FengWu2 19 -0.255 -0.224 -0.437 0.032 -0.256 0.018 -0.264 -0.212 -0.066 -0.257 -0.529 -0.247 FengWuW2S 9 FengWu 20 -0.305 -0.408 -0.315 -0.035 -0.138 -0.107 -0.174 -0.214 -0.411 -0.517 -0.398 -0.3 HAPPY 10 AZN 21 -0.418 -0.493 -0.407 -0.788 -0.226 -0.179 -0.326 -0.478 -0.761 -0.353 -0.311 -0.654
Near-surface air temperature, forecast window 1 (days 19 to 25)
Near-surface air temperature, forecast window 2 (days 26 to 32)
Mean sea level pressure, forecast window 1 (days 19 to 25)
Mean sea level pressure, forecast window 2 (days 26 to 32)
Accumulated precipitation, forecast window 1 (days 19 to 25)
Accumulated precipitation, forecast window 2 (days 26 to 32)
